diff --git a/src/main/resources/db/migration/postgresql/V6_0__Multipieces_bis.sql b/src/main/resources/db/migration/postgresql/V6_0__Multipieces_bis.sql
new file mode 100644
index 0000000..6252c42
--- /dev/null
+++ b/src/main/resources/db/migration/postgresql/V6_0__Multipieces_bis.sql
@@ -0,0 +1,2 @@
+drop index bis_piece_player_id_idx;
+create index bis_piece_type_player_id_idx on bis(player_id, piece, piece_type);
\ No newline at end of file
diff --git a/src/main/resources/db/migration/sqlite/V6_0__Multipieces_bis.sql b/src/main/resources/db/migration/sqlite/V6_0__Multipieces_bis.sql
new file mode 100644
index 0000000..6252c42
--- /dev/null
+++ b/src/main/resources/db/migration/sqlite/V6_0__Multipieces_bis.sql
@@ -0,0 +1,2 @@
+drop index bis_piece_player_id_idx;
+create index bis_piece_type_player_id_idx on bis(player_id, piece, piece_type);
\ No newline at end of file
diff --git a/src/main/scala/me/arcanis/ffxivbis/http/BiSHelper.scala b/src/main/scala/me/arcanis/ffxivbis/http/BiSHelper.scala
index 6dd2e4e..25b71b1 100644
--- a/src/main/scala/me/arcanis/ffxivbis/http/BiSHelper.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/http/BiSHelper.scala
@@ -37,10 +37,13 @@ trait BiSHelper extends BisProviderHelper {
     }
 
   def putBiS(playerId: PlayerId, link: String)
-            (implicit executionContext: ExecutionContext, timeout: Timeout): Future[Unit] =
-    downloadBiS(link, playerId.job).flatMap { bis =>
-      Future.traverse(bis.pieces)(addPieceBiS(playerId, _))
-    }.map(_ => ())
+            (implicit executionContext: ExecutionContext, timeout: Timeout): Future[Unit] = {
+    (storage ? DatabaseBiSHandler.RemovePiecesFromBiS(playerId)).flatMap { _ =>
+      downloadBiS(link, playerId.job).flatMap { bis =>
+        Future.traverse(bis.pieces)(addPieceBiS(playerId, _))
+      }.map(_ => ())
+    }
+  }
 
   def removePieceBiS(playerId: PlayerId, piece: Piece)
                     (implicit executionContext: ExecutionContext, timeout: Timeout): Future[Int] =
diff --git a/src/main/scala/me/arcanis/ffxivbis/http/api/v1/json/PlayerResponse.scala b/src/main/scala/me/arcanis/ffxivbis/http/api/v1/json/PlayerResponse.scala
index 277baf7..2225f09 100644
--- a/src/main/scala/me/arcanis/ffxivbis/http/api/v1/json/PlayerResponse.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/http/api/v1/json/PlayerResponse.scala
@@ -21,13 +21,15 @@ case class PlayerResponse(
   @Schema(description = "player loot priority", `type` = "number") priority: Option[Int]) {
   def toPlayer: Player =
     Player(-1, partyId, Job.withName(job), nick,
-      BiS(bis.getOrElse(Seq.empty).map(_.toPiece)), loot.getOrElse(Seq.empty).map(_.toLoot),
+      BiS(bis.getOrElse(Seq.empty).map(_.toPiece)),
+      loot.getOrElse(Seq.empty).map(_.toLoot),
       link, priority.getOrElse(0))
 }
 
 object PlayerResponse {
   def fromPlayer(player: Player): PlayerResponse =
     PlayerResponse(player.partyId, player.job.toString, player.nick,
-      Some(player.bis.pieces.map(PieceResponse.fromPiece)), Some(player.loot.map(LootResponse.fromLoot)),
+      Some(player.bis.pieces.map(PieceResponse.fromPiece)),
+      Some(player.loot.map(LootResponse.fromLoot)),
       player.link, Some(player.priority))
 }
diff --git a/src/main/scala/me/arcanis/ffxivbis/http/view/BiSView.scala b/src/main/scala/me/arcanis/ffxivbis/http/view/BiSView.scala
index 501580b..87f740f 100644
--- a/src/main/scala/me/arcanis/ffxivbis/http/view/BiSView.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/http/view/BiSView.scala
@@ -113,7 +113,7 @@ object BiSView {
             input(name:="add", id:="add", `type`:="submit", value:="add")
           ),
 
-          form(action:="/bis", method:="post")(
+          form(action:=s"/party/$partyId/bis", method:="post")(
             select(name:="player", id:="player", title:="player")
                   (for (player <- party) yield option(player.playerId.toString)),
             input(name:="link", id:="link", placeholder:="player bis link", title:="link", `type`:="text"),
diff --git a/src/main/scala/me/arcanis/ffxivbis/http/view/PlayerView.scala b/src/main/scala/me/arcanis/ffxivbis/http/view/PlayerView.scala
index ebc1bb0..932b582 100644
--- a/src/main/scala/me/arcanis/ffxivbis/http/view/PlayerView.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/http/view/PlayerView.scala
@@ -47,8 +47,8 @@ class PlayerView(override val storage: ActorRef, override val ariyala: ActorRef)
           post {
             formFields("nick".as[String], "job".as[String], "priority".as[Int].?, "link".as[String].?, "action".as[String]) {
               (nick, job, maybePriority, maybeLink, action) =>
-                onComplete(modifyPartyCall(partyId, nick, job, maybePriority, maybeLink, action)) {
-                  case _ => redirect(s"/party/$partyId/players", StatusCodes.Found)
+                onComplete(modifyPartyCall(partyId, nick, job, maybePriority, maybeLink, action)) { _ =>
+                  redirect(s"/party/$partyId/players", StatusCodes.Found)
                 }
             }
           }
@@ -62,7 +62,7 @@ class PlayerView(override val storage: ActorRef, override val ariyala: ActorRef)
                              (implicit executionContext: ExecutionContext, timeout: Timeout): Future[Unit] = {
     def maybePlayerId = PlayerId(partyId, Some(nick), Some(job))
     def player(playerId: PlayerId) =
-      Player(-1, partyId, playerId.job, playerId.nick, BiS(), Seq.empty, maybeLink, maybePriority.getOrElse(0))
+      Player(-1, partyId, playerId.job, playerId.nick, BiS.empty, Seq.empty, maybeLink, maybePriority.getOrElse(0))
 
     (action, maybePlayerId) match {
       case ("add", Some(playerId)) => addPlayer(player(playerId)).map(_ => ())
diff --git a/src/main/scala/me/arcanis/ffxivbis/models/BiS.scala b/src/main/scala/me/arcanis/ffxivbis/models/BiS.scala
index fca30ca..bfe2762 100644
--- a/src/main/scala/me/arcanis/ffxivbis/models/BiS.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/models/BiS.scala
@@ -8,21 +8,7 @@
  */
 package me.arcanis.ffxivbis.models
 
-case class BiS(weapon: Option[Piece],
-               head: Option[Piece],
-               body: Option[Piece],
-               hands: Option[Piece],
-               waist: Option[Piece],
-               legs: Option[Piece],
-               feet: Option[Piece],
-               ears: Option[Piece],
-               neck: Option[Piece],
-               wrist: Option[Piece],
-               leftRing: Option[Piece],
-               rightRing: Option[Piece]) {
-
-  val pieces: Seq[Piece] =
-    Seq(weapon, head, body, hands, waist, legs, feet, ears, neck, wrist, leftRing, rightRing).flatten
+case class BiS(pieces: Seq[Piece]) {
 
   def hasPiece(piece: Piece): Boolean = piece match {
     case upgrade: PieceUpgrade => upgrades.contains(upgrade)
@@ -31,50 +17,27 @@ case class BiS(weapon: Option[Piece],
 
   def upgrades: Map[PieceUpgrade, Int] =
     pieces.groupBy(_.upgrade).foldLeft(Map.empty[PieceUpgrade, Int]) {
-      case (acc, (Some(k), v)) => acc + (k -> v.length)
+      case (acc, (Some(k), v)) => acc + (k -> v.size)
       case (acc, _) => acc
     } withDefaultValue 0
 
-  def withPiece(piece: Piece): BiS = copyWithPiece(piece.piece, Some(piece))
-  def withoutPiece(piece: Piece): BiS = copyWithPiece(piece.piece, None)
+  def withPiece(piece: Piece): BiS = copy(pieces :+ piece)
+  def withoutPiece(piece: Piece): BiS = copy(pieces.filterNot(_.strictEqual(piece)))
 
-  private def copyWithPiece(name: String, piece: Option[Piece]): BiS = {
-    val params = Map(
-      "weapon" -> weapon,
-      "head" -> head,
-      "body" -> body,
-      "hands" -> hands,
-      "waist" -> waist,
-      "legs" -> legs,
-      "feet" -> feet,
-      "ears" -> ears,
-      "neck" -> neck,
-      "wrist" -> wrist,
-      "left ring" -> leftRing,
-      "right ring" -> rightRing
-    ) + (name -> piece)
-    BiS(params)
+  override def equals(obj: Any): Boolean = {
+    def comparePieces(left: Seq[Piece], right: Seq[Piece]): Boolean =
+      left.groupBy(identity).view.mapValues(_.size).forall {
+        case (key, count) => right.count(_.strictEqual(key)) == count
+      }
+
+    obj match {
+      case left: BiS => comparePieces(left.pieces, pieces)
+      case _ => false
+    }
   }
 }
 
 object BiS {
-  def apply(data: Map[String, Option[Piece]]): BiS =
-    BiS(
-      data.get("weapon").flatten,
-      data.get("head").flatten,
-      data.get("body").flatten,
-      data.get("hands").flatten,
-      data.get("waist").flatten,
-      data.get("legs").flatten,
-      data.get("feet").flatten,
-      data.get("ears").flatten,
-      data.get("neck").flatten,
-      data.get("wrist").flatten,
-      data.get("left ring").flatten,
-      data.get("right ring").flatten)
 
-  def apply(): BiS = BiS(Seq.empty)
-
-  def apply(pieces: Seq[Piece]): BiS =
-    BiS(pieces.map(piece => piece.piece -> Some(piece)).toMap)
+  def empty: BiS = BiS(Seq.empty)
 }
diff --git a/src/main/scala/me/arcanis/ffxivbis/models/Job.scala b/src/main/scala/me/arcanis/ffxivbis/models/Job.scala
index 6135f1c..415eb6f 100644
--- a/src/main/scala/me/arcanis/ffxivbis/models/Job.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/models/Job.scala
@@ -9,6 +9,7 @@
 package me.arcanis.ffxivbis.models
 
 object Job {
+
   sealed trait RightSide
   object AccessoriesDex extends RightSide
   object AccessoriesInt extends RightSide
@@ -26,6 +27,7 @@ object Job {
   object BodyRanges extends LeftSide
 
   sealed trait Job {
+
     def leftSide: LeftSide
     def rightSide: RightSide
 
diff --git a/src/main/scala/me/arcanis/ffxivbis/models/Loot.scala b/src/main/scala/me/arcanis/ffxivbis/models/Loot.scala
index 056a196..1f1af48 100644
--- a/src/main/scala/me/arcanis/ffxivbis/models/Loot.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/models/Loot.scala
@@ -11,5 +11,6 @@ package me.arcanis.ffxivbis.models
 import java.time.Instant
 
 case class Loot(playerId: Long, piece: Piece, timestamp: Instant, isFreeLoot: Boolean) {
+
   def isFreeLootToString: String = if (isFreeLoot) "yes" else "no"
 }
diff --git a/src/main/scala/me/arcanis/ffxivbis/models/Party.scala b/src/main/scala/me/arcanis/ffxivbis/models/Party.scala
index 81894f4..1976fc1 100644
--- a/src/main/scala/me/arcanis/ffxivbis/models/Party.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/models/Party.scala
@@ -36,6 +36,7 @@ case class Party(partyDescription: PartyDescription, rules: Seq[String], players
 }
 
 object Party {
+
   def apply(party: PartyDescription, config: Config,
             players: Map[Long, Player], bis: Seq[Loot], loot: Seq[Loot]): Party = {
     val bisByPlayer = bis.groupBy(_.playerId).view.mapValues(piece => BiS(piece.map(_.piece)))
diff --git a/src/main/scala/me/arcanis/ffxivbis/models/PartyDescription.scala b/src/main/scala/me/arcanis/ffxivbis/models/PartyDescription.scala
index 8279560..ea87e53 100644
--- a/src/main/scala/me/arcanis/ffxivbis/models/PartyDescription.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/models/PartyDescription.scala
@@ -9,9 +9,11 @@
 package me.arcanis.ffxivbis.models
 
 case class PartyDescription(partyId: String, partyAlias: Option[String]) {
+
   def alias: String = partyAlias.getOrElse(partyId)
 }
 
 object PartyDescription {
+
   def empty(partyId: String): PartyDescription = PartyDescription(partyId, None)
 }
\ No newline at end of file
diff --git a/src/main/scala/me/arcanis/ffxivbis/models/Piece.scala b/src/main/scala/me/arcanis/ffxivbis/models/Piece.scala
index 29da709..c50edb8 100644
--- a/src/main/scala/me/arcanis/ffxivbis/models/Piece.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/models/Piece.scala
@@ -8,7 +8,8 @@
  */
 package me.arcanis.ffxivbis.models
 
-sealed trait Piece {
+sealed trait Piece extends Equals {
+
   def pieceType: PieceType.PieceType
   def job: Job.Job
   def piece: String
@@ -22,6 +23,9 @@ sealed trait Piece {
     case _: PieceBody => Some(BodyUpgrade)
     case _: PieceWeapon => Some(WeaponUpgrade)
   }
+
+  // used for ring comparison
+  def strictEqual(obj: Any): Boolean = equals(obj)
 }
 
 trait PieceAccessory extends Piece
@@ -78,10 +82,16 @@ case class Wrist(override val pieceType: PieceType.PieceType, override val job:
 case class Ring(override val pieceType: PieceType.PieceType, override val job: Job.Job, override val piece: String = "ring")
   extends PieceAccessory {
   def withJob(other: Job.Job): Piece = copy(job = other)
+
   override def equals(obj: Any): Boolean = obj match {
     case Ring(thatPieceType, thatJob, _) => (thatPieceType == pieceType) && (thatJob == job)
     case _ => false
   }
+
+  override def strictEqual(obj: Any): Boolean = obj match {
+    case ring: Ring => equals(obj) && (ring.piece == this.piece)
+    case _ => false
+  }
 }
 
 case object AccessoryUpgrade extends PieceUpgrade {
diff --git a/src/main/scala/me/arcanis/ffxivbis/models/PieceType.scala b/src/main/scala/me/arcanis/ffxivbis/models/PieceType.scala
index cc57618..43c0b61 100644
--- a/src/main/scala/me/arcanis/ffxivbis/models/PieceType.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/models/PieceType.scala
@@ -1,6 +1,7 @@
 package me.arcanis.ffxivbis.models
 
 object PieceType {
+
   sealed trait PieceType
 
   case object Crafted extends PieceType
diff --git a/src/main/scala/me/arcanis/ffxivbis/models/PlayerId.scala b/src/main/scala/me/arcanis/ffxivbis/models/PlayerId.scala
index 6e2ad7b..6fbdf68 100644
--- a/src/main/scala/me/arcanis/ffxivbis/models/PlayerId.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/models/PlayerId.scala
@@ -12,6 +12,7 @@ import scala.util.Try
 import scala.util.matching.Regex
 
 trait PlayerIdBase {
+
   def job: Job.Job
   def nick: String
 
@@ -21,6 +22,7 @@ trait PlayerIdBase {
 case class PlayerId(partyId: String, job: Job.Job, nick: String) extends PlayerIdBase
 
 object PlayerId {
+
   def apply(partyId: String, maybeNick: Option[String], maybeJob: Option[String]): Option[PlayerId] =
     (maybeNick, maybeJob) match {
       case (Some(nick), Some(job)) => Try(PlayerId(partyId, Job.withName(job), nick)).toOption
diff --git a/src/main/scala/me/arcanis/ffxivbis/models/PlayerIdWithCounters.scala b/src/main/scala/me/arcanis/ffxivbis/models/PlayerIdWithCounters.scala
index f28c6bc..3e3627d 100644
--- a/src/main/scala/me/arcanis/ffxivbis/models/PlayerIdWithCounters.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/models/PlayerIdWithCounters.scala
@@ -38,6 +38,7 @@ case class PlayerIdWithCounters(partyId: String,
 }
 
 object PlayerIdWithCounters {
+
   private case class PlayerCountersComparator(values: Int*) {
     def >(that: PlayerCountersComparator): Boolean = {
       @scala.annotation.tailrec
diff --git a/src/main/scala/me/arcanis/ffxivbis/service/impl/DatabaseBiSHandler.scala b/src/main/scala/me/arcanis/ffxivbis/service/impl/DatabaseBiSHandler.scala
index b9d2eb6..50a6e36 100644
--- a/src/main/scala/me/arcanis/ffxivbis/service/impl/DatabaseBiSHandler.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/service/impl/DatabaseBiSHandler.scala
@@ -29,6 +29,10 @@ trait DatabaseBiSHandler { this: Database  =>
     case RemovePieceFromBiS(playerId, piece) =>
       val client = sender()
       profile.deletePieceBiS(playerId, piece).pipeTo(client)
+
+    case RemovePiecesFromBiS(playerId) =>
+      val client = sender()
+      profile.deletePiecesBiS(playerId).pipeTo(client)
   }
 }
 
@@ -40,4 +44,7 @@ object DatabaseBiSHandler {
   case class RemovePieceFromBiS(playerId: PlayerId, piece: Piece) extends Database.DatabaseRequest {
     override def partyId: String = playerId.partyId
   }
+  case class RemovePiecesFromBiS(playerId: PlayerId) extends Database.DatabaseRequest {
+    override def partyId: String = playerId.partyId
+  }
 }
diff --git a/src/main/scala/me/arcanis/ffxivbis/storage/BiSProfile.scala b/src/main/scala/me/arcanis/ffxivbis/storage/BiSProfile.scala
index 91c369b..cf3015b 100644
--- a/src/main/scala/me/arcanis/ffxivbis/storage/BiSProfile.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/storage/BiSProfile.scala
@@ -46,14 +46,21 @@ trait BiSProfile { this: DatabaseProfile =>
 
   def deletePieceBiSById(piece: Piece)(playerId: Long): Future[Int] =
     db.run(pieceBiS(BiSRep.fromPiece(playerId, piece)).delete)
+  def deletePiecesBiSById(playerId: Long): Future[Int] =
+    db.run(piecesBiS(Seq(playerId)).delete)
   def getPiecesBiSById(playerId: Long): Future[Seq[Loot]] = getPiecesBiSById(Seq(playerId))
   def getPiecesBiSById(playerIds: Seq[Long]): Future[Seq[Loot]] =
     db.run(piecesBiS(playerIds).result).map(_.map(_.toLoot))
   def insertPieceBiSById(piece: Piece)(playerId: Long): Future[Int] =
-    db.run(bisTable.insertOrUpdate(BiSRep.fromPiece(playerId, piece)))
+    getPiecesBiSById(playerId).flatMap {
+      case pieces if pieces.exists(loot => loot.piece.strictEqual(piece)) => Future.successful(0)
+      case _ => db.run(bisTable.insertOrUpdate(BiSRep.fromPiece(playerId, piece)))
+    }
 
   private def pieceBiS(piece: BiSRep) =
-    piecesBiS(Seq(piece.playerId)).filter(_.piece === piece.piece)
+    piecesBiS(Seq(piece.playerId)).filter { stored =>
+      (stored.piece === piece.piece) && (stored.pieceType === piece.pieceType)
+    }
   private def piecesBiS(playerIds: Seq[Long]) =
     bisTable.filter(_.playerId.inSet(playerIds.toSet))
 }
diff --git a/src/main/scala/me/arcanis/ffxivbis/storage/DatabaseProfile.scala b/src/main/scala/me/arcanis/ffxivbis/storage/DatabaseProfile.scala
index 0c2a2f8..45658ef 100644
--- a/src/main/scala/me/arcanis/ffxivbis/storage/DatabaseProfile.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/storage/DatabaseProfile.scala
@@ -36,6 +36,8 @@ class DatabaseProfile(context: ExecutionContext, config: Config)
   // generic bis api
   def deletePieceBiS(playerId: PlayerId, piece: Piece): Future[Int] =
     byPlayerId(playerId, deletePieceBiSById(piece))
+  def deletePiecesBiS(playerId: PlayerId): Future[Int] =
+    byPlayerId(playerId, deletePiecesBiSById)
   def getPiecesBiS(playerId: PlayerId): Future[Seq[Loot]] =
     byPlayerId(playerId, getPiecesBiSById)
   def getPiecesBiS(partyId: String): Future[Seq[Loot]] =
@@ -57,7 +59,7 @@ class DatabaseProfile(context: ExecutionContext, config: Config)
     byPlayerId(playerId, insertPieceById(loot))
 
   private def byPartyId[T](partyId: String, callback: Seq[Long] => Future[T]): Future[T] =
-    getPlayers(partyId).map(callback).flatten
+    getPlayers(partyId).flatMap(callback)
   private def byPlayerId[T](playerId: PlayerId, callback: Long => Future[T]): Future[T] =
     getPlayer(playerId).flatMap {
       case Some(id) => callback(id)
diff --git a/src/main/scala/me/arcanis/ffxivbis/storage/PlayersProfile.scala b/src/main/scala/me/arcanis/ffxivbis/storage/PlayersProfile.scala
index e04664b..568d305 100644
--- a/src/main/scala/me/arcanis/ffxivbis/storage/PlayersProfile.scala
+++ b/src/main/scala/me/arcanis/ffxivbis/storage/PlayersProfile.scala
@@ -19,7 +19,7 @@ trait PlayersProfile { this: DatabaseProfile =>
                        nick: String, job: String, link: Option[String], priority: Int) {
     def toPlayer: Player =
       Player(playerId.getOrElse(-1), partyId, Job.withName(job), nick,
-        BiS(Seq.empty), List.empty, link, priority)
+        BiS.empty, Seq.empty, link, priority)
   }
   object PlayerRep {
     def fromPlayer(player: Player, id: Option[Long]): PlayerRep =
diff --git a/src/test/scala/me/arcanis/ffxivbis/Fixtures.scala b/src/test/scala/me/arcanis/ffxivbis/Fixtures.scala
index 1b98ed5..a672992 100644
--- a/src/test/scala/me/arcanis/ffxivbis/Fixtures.scala
+++ b/src/test/scala/me/arcanis/ffxivbis/Fixtures.scala
@@ -26,6 +26,7 @@ object Fixtures {
 
   lazy val lootWeapon: Piece = Weapon(pieceType = PieceType.Tome, Job.AnyJob)
   lazy val lootBody: Piece = Body(pieceType = PieceType.Savage, Job.AnyJob)
+  lazy val lootBodyCrafted: Piece = Body(pieceType = PieceType.Crafted, Job.AnyJob)
   lazy val lootHands: Piece = Hands(pieceType = PieceType.Tome, Job.AnyJob)
   lazy val lootWaist: Piece = Waist(pieceType = PieceType.Tome, Job.AnyJob)
   lazy val lootLegs: Piece = Legs(pieceType = PieceType.Savage, Job.AnyJob)
@@ -40,7 +41,7 @@ object Fixtures {
   lazy val partyId2: String = Party.randomPartyId
 
   lazy val playerEmpty: Player =
-    Player(1, partyId, Job.DNC, "Siuan Sanche", BiS(), Seq.empty, Some(link))
+    Player(1, partyId, Job.DNC, "Siuan Sanche", BiS.empty, Seq.empty, Some(link))
   lazy val playerWithBiS: Player = playerEmpty.copy(bis = bis)
 
   lazy val userPassword: String = "password"
diff --git a/src/test/scala/me/arcanis/ffxivbis/http/api/v1/BiSEndpointTest.scala b/src/test/scala/me/arcanis/ffxivbis/http/api/v1/BiSEndpointTest.scala
index 27c7fe7..e63a678 100644
--- a/src/test/scala/me/arcanis/ffxivbis/http/api/v1/BiSEndpointTest.scala
+++ b/src/test/scala/me/arcanis/ffxivbis/http/api/v1/BiSEndpointTest.scala
@@ -10,10 +10,11 @@ import akka.testkit.TestKit
 import com.typesafe.config.Config
 import me.arcanis.ffxivbis.{Fixtures, Settings}
 import me.arcanis.ffxivbis.http.api.v1.json._
-import me.arcanis.ffxivbis.models.BiS
+import me.arcanis.ffxivbis.models.{BiS, Body, Job, PieceType}
 import me.arcanis.ffxivbis.service.bis.BisProvider
 import me.arcanis.ffxivbis.service.{PartyService, impl}
 import me.arcanis.ffxivbis.storage.Migration
+import me.arcanis.ffxivbis.utils.Compare
 import org.scalatest.{Matchers, WordSpec}
 
 import scala.concurrent.Await
@@ -48,6 +49,15 @@ class BiSEndpointTest extends WordSpec
     Settings.clearDatabase(system.settings.config)
   }
 
+  private def compareBiSResponse(actual: PlayerResponse, expected: PlayerResponse): Unit = {
+    actual.partyId shouldEqual expected.partyId
+    actual.nick shouldEqual expected.nick
+    actual.job shouldEqual expected.job
+    Compare.seqEquals(actual.bis.get, expected.bis.get) shouldEqual true
+    actual.link shouldEqual expected.link
+    actual.priority shouldEqual expected.priority
+  }
+
   "api v1 bis endpoint" must {
 
     "create best in slot set from ariyala" in {
@@ -61,11 +71,13 @@ class BiSEndpointTest extends WordSpec
 
     "return best in slot set" in {
       val uri = endpoint.withQuery(Uri.Query(Map("nick" -> playerId.nick, "job" -> playerId.job)))
-      val response = Seq(PlayerResponse.fromPlayer(Fixtures.playerEmpty.withBiS(Some(Fixtures.bis))))
+      val response = PlayerResponse.fromPlayer(Fixtures.playerEmpty.withBiS(Some(Fixtures.bis)))
 
       Get(uri).withHeaders(auth) ~> route ~> check {
         status shouldEqual StatusCodes.OK
-        responseAs[Seq[PlayerResponse]] shouldEqual response
+        val actual = responseAs[Seq[PlayerResponse]]
+        actual.length shouldEqual 1
+        actual.foreach(compareBiSResponse(_, response))
       }
     }
 
@@ -80,11 +92,13 @@ class BiSEndpointTest extends WordSpec
 
       val uri = endpoint.withQuery(Uri.Query(Map("nick" -> playerId.nick, "job" -> playerId.job)))
       val bis = BiS(Fixtures.bis.pieces.filterNot(_ == Fixtures.lootBody))
-      val response = Seq(PlayerResponse.fromPlayer(Fixtures.playerEmpty.withBiS(Some(bis))))
+      val response = PlayerResponse.fromPlayer(Fixtures.playerEmpty.withBiS(Some(bis)))
 
       Get(uri).withHeaders(auth) ~> route ~> check {
         status shouldEqual StatusCodes.OK
-        responseAs[Seq[PlayerResponse]] shouldEqual response
+        val actual = responseAs[Seq[PlayerResponse]]
+        actual.length shouldEqual 1
+        actual.foreach(compareBiSResponse(_, response))
       }
     }
 
@@ -98,11 +112,102 @@ class BiSEndpointTest extends WordSpec
       }
 
       val uri = endpoint.withQuery(Uri.Query(Map("nick" -> playerId.nick, "job" -> playerId.job)))
-      val response = Seq(PlayerResponse.fromPlayer(Fixtures.playerEmpty.withBiS(Some(Fixtures.bis))))
+      val response = PlayerResponse.fromPlayer(Fixtures.playerEmpty.withBiS(Some(Fixtures.bis)))
 
       Get(uri).withHeaders(auth) ~> route ~> check {
         status shouldEqual StatusCodes.OK
-        responseAs[Seq[PlayerResponse]] shouldEqual response
+        val actual = responseAs[Seq[PlayerResponse]]
+        actual.length shouldEqual 1
+        actual.foreach(compareBiSResponse(_, response))
+      }
+    }
+
+    "do not allow to add same item to best in slot set" in {
+      val piece = PieceResponse.fromPiece(Fixtures.lootBody.withJob(Job.DNC))
+      val entity = PieceActionResponse(ApiAction.add, piece, playerId, None)
+
+      Post(endpoint, entity).withHeaders(auth) ~> route ~> check {
+        status shouldEqual StatusCodes.Accepted
+        responseAs[String] shouldEqual ""
+      }
+
+      val uri = endpoint.withQuery(Uri.Query(Map("nick" -> playerId.nick, "job" -> playerId.job)))
+      val response = PlayerResponse.fromPlayer(Fixtures.playerEmpty.withBiS(Some(Fixtures.bis)))
+
+      Get(uri).withHeaders(auth) ~> route ~> check {
+        status shouldEqual StatusCodes.OK
+        val actual = responseAs[Seq[PlayerResponse]]
+        actual.length shouldEqual 1
+        actual.foreach(compareBiSResponse(_, response))
+      }
+    }
+
+    "allow to add item with another type to best in slot set" in {
+      val piece = PieceResponse.fromPiece(Fixtures.lootBodyCrafted.withJob(Job.DNC))
+      val entity = PieceActionResponse(ApiAction.add, piece, playerId, None)
+
+      Post(endpoint, entity).withHeaders(auth) ~> route ~> check {
+        status shouldEqual StatusCodes.Accepted
+        responseAs[String] shouldEqual ""
+      }
+
+      val uri = endpoint.withQuery(Uri.Query(Map("nick" -> playerId.nick, "job" -> playerId.job)))
+      val bis = Fixtures.bis.withPiece(piece.toPiece)
+      val response = PlayerResponse.fromPlayer(Fixtures.playerEmpty.withBiS(Some(bis)))
+
+      Get(uri).withHeaders(auth) ~> route ~> check {
+        status shouldEqual StatusCodes.OK
+        val actual = responseAs[Seq[PlayerResponse]]
+        actual.length shouldEqual 1
+        actual.foreach(compareBiSResponse(_, response))
+      }
+    }
+
+    "remove only specific item from best in slot set" in {
+      val piece = PieceResponse.fromPiece(Fixtures.lootBodyCrafted.withJob(Job.DNC))
+      val entity = PieceActionResponse(ApiAction.remove, piece, playerId, None)
+
+      Post(endpoint, entity).withHeaders(auth) ~> route ~> check {
+        status shouldEqual StatusCodes.Accepted
+        responseAs[String] shouldEqual ""
+      }
+
+      val uri = endpoint.withQuery(Uri.Query(Map("nick" -> playerId.nick, "job" -> playerId.job)))
+      val response = PlayerResponse.fromPlayer(Fixtures.playerEmpty.withBiS(Some(Fixtures.bis)))
+
+      Get(uri).withHeaders(auth) ~> route ~> check {
+        status shouldEqual StatusCodes.OK
+        val actual = responseAs[Seq[PlayerResponse]]
+        actual.length shouldEqual 1
+        actual.foreach(compareBiSResponse(_, response))
+      }
+    }
+
+    "totaly replace player bis" in {
+      // add random item first
+      val piece = PieceResponse.fromPiece(Fixtures.lootBodyCrafted.withJob(Job.DNC))
+      val entity = PieceActionResponse(ApiAction.add, piece, playerId, None)
+
+      Post(endpoint, entity).withHeaders(auth) ~> route ~> check {
+        status shouldEqual StatusCodes.Accepted
+        responseAs[String] shouldEqual ""
+      }
+
+      val bisEntity = PlayerBiSLinkResponse(Fixtures.link, playerId)
+
+      Put(endpoint, bisEntity).withHeaders(auth) ~> route ~> check {
+        status shouldEqual StatusCodes.Created
+        responseAs[String] shouldEqual ""
+      }
+
+      val uri = endpoint.withQuery(Uri.Query(Map("nick" -> playerId.nick, "job" -> playerId.job)))
+      val response = PlayerResponse.fromPlayer(Fixtures.playerEmpty.withBiS(Some(Fixtures.bis)))
+
+      Get(uri).withHeaders(auth) ~> route ~> check {
+        status shouldEqual StatusCodes.OK
+        val actual = responseAs[Seq[PlayerResponse]]
+        actual.length shouldEqual 1
+        actual.foreach(compareBiSResponse(_, response))
       }
     }
 
diff --git a/src/test/scala/me/arcanis/ffxivbis/models/BiSTest.scala b/src/test/scala/me/arcanis/ffxivbis/models/BiSTest.scala
index 647f7c4..ef03846 100644
--- a/src/test/scala/me/arcanis/ffxivbis/models/BiSTest.scala
+++ b/src/test/scala/me/arcanis/ffxivbis/models/BiSTest.scala
@@ -29,18 +29,14 @@ class BiSTest extends WordSpecLike with Matchers with BeforeAndAfterAll {
       val bis = BiS(Seq(Fixtures.lootLegs))
       val newBis = bis.withPiece(Fixtures.lootHands)
 
-      newBis.legs shouldEqual Some(Fixtures.lootLegs)
-      newBis.hands shouldEqual Some(Fixtures.lootHands)
-      newBis.pieces.length shouldEqual 2
+      newBis shouldEqual BiS(Seq(Fixtures.lootLegs, Fixtures.lootHands))
     }
 
     "create copy without piece" in {
       val bis = BiS(Seq(Fixtures.lootHands, Fixtures.lootLegs))
       val newBis = bis.withoutPiece(Fixtures.lootHands)
 
-      newBis.legs shouldEqual Some(Fixtures.lootLegs)
-      newBis.hands shouldEqual None
-      newBis.pieces.length shouldEqual 1
+      newBis shouldEqual BiS(Seq(Fixtures.lootLegs))
     }
 
     "ignore upgrade on modification" in {
diff --git a/src/test/scala/me/arcanis/ffxivbis/service/DatabaseBiSHandlerTest.scala b/src/test/scala/me/arcanis/ffxivbis/service/DatabaseBiSHandlerTest.scala
index 0c29e5e..c849169 100644
--- a/src/test/scala/me/arcanis/ffxivbis/service/DatabaseBiSHandlerTest.scala
+++ b/src/test/scala/me/arcanis/ffxivbis/service/DatabaseBiSHandlerTest.scala
@@ -72,7 +72,7 @@ class DatabaseBiSHandlerTest
 
       database ! impl.DatabaseBiSHandler.GetBiS(Fixtures.playerEmpty.partyId, None)
       expectMsgPF(timeout) {
-        case party: Seq[_] if partyBiSCompare(party, Seq(newPiece)) => ()
+        case party: Seq[_] if partyBiSCompare(party, Seq(Fixtures.lootHands, newPiece)) => ()
       }
     }
 
diff --git a/src/test/scala/me/arcanis/ffxivbis/service/LootSelectorTest.scala b/src/test/scala/me/arcanis/ffxivbis/service/LootSelectorTest.scala
index 01cc5e2..a914076 100644
--- a/src/test/scala/me/arcanis/ffxivbis/service/LootSelectorTest.scala
+++ b/src/test/scala/me/arcanis/ffxivbis/service/LootSelectorTest.scala
@@ -18,8 +18,8 @@ class LootSelectorTest extends TestKit(ActorSystem("lootselector"))
   import me.arcanis.ffxivbis.utils.Converters._
 
   private var default: Party = Party(PartyDescription.empty(Fixtures.partyId), Settings.config(Map.empty), Map.empty, Seq.empty, Seq.empty)
-  private var dnc: Player = Player(-1, Fixtures.partyId, Job.DNC, "a nick", BiS(), Seq.empty, Some(Fixtures.link))
-  private var drg: Player = Player(-1, Fixtures.partyId, Job.DRG, "another nick", BiS(), Seq.empty, Some(Fixtures.link2))
+  private var dnc: Player = Player(-1, Fixtures.partyId, Job.DNC, "a nick", BiS.empty, Seq.empty, Some(Fixtures.link))
+  private var drg: Player = Player(-1, Fixtures.partyId, Job.DRG, "another nick", BiS.empty, Seq.empty, Some(Fixtures.link2))
   private val timeout: FiniteDuration = 60 seconds
 
   override def beforeAll(): Unit = {
@@ -51,7 +51,7 @@ class LootSelectorTest extends TestKit(ActorSystem("lootselector"))
     "suggest upgrade" in {
       val party = default.withPlayer(
         dnc.withBiS(
-          Some(dnc.bis.copy(weapon = Some(Weapon(pieceType = PieceType.Tome, Job.DNC))))
+          Some(dnc.bis.withPiece(Weapon(pieceType = PieceType.Tome, Job.DNC)))
         )
       )