diff --git a/zscript/biorifle.zsc b/zscript/biorifle.zsc
index 919c7f3..4952d90 100644
--- a/zscript/biorifle.zsc
+++ b/zscript/biorifle.zsc
@@ -17,7 +17,7 @@ Class Tier3Weapon : RandomSpawner2 replaces Shotgun
 }
 Class Tier3Weapon2 : Tier3Weapon replaces SuperShotgun {}
 
-Class BioAmmo : UTAmmo
+Class BioAmmo : Ammo
 {
 	Default
 	{
@@ -28,7 +28,6 @@ Class BioAmmo : UTAmmo
 		Ammo.BackpackAmount 50;
 		Ammo.BackpackMaxAmount 100;
 		Ammo.DropAmount 25;
-		UTAmmo.UsedInSlot AMMO_SLOT3;
 	}
 	States
 	{
diff --git a/zscript/eightball.zsc b/zscript/eightball.zsc
index a7f508f..8ebdbf2 100644
--- a/zscript/eightball.zsc
+++ b/zscript/eightball.zsc
@@ -1,4 +1,4 @@
-Class UTRocketAmmo : UTAmmo
+Class UTRocketAmmo : Ammo
 {
 	Default
 	{
@@ -9,7 +9,6 @@ Class UTRocketAmmo : UTAmmo
 		Ammo.BackpackAmount 12;
 		Ammo.BackpackMaxAmount 48;
 		Ammo.DropAmount 12;
-		UTAmmo.UsedInSlot AMMO_SLOT9;
 	}
 	States
 	{
diff --git a/zscript/flakcannon.zsc b/zscript/flakcannon.zsc
index 9739279..cd8c6fc 100644
--- a/zscript/flakcannon.zsc
+++ b/zscript/flakcannon.zsc
@@ -24,7 +24,7 @@ Class Tier5Weapon : RandomSpawner2 replaces RocketLauncher
 	}
 }
 
-Class FlakAmmo : UTAmmo
+Class FlakAmmo : Ammo
 {
 	Default
 	{
@@ -35,7 +35,6 @@ Class FlakAmmo : UTAmmo
 		Ammo.BackpackAmount 20;
 		Ammo.BackpackMaxAmount 50;
 		Ammo.DropAmount 10;
-		UTAmmo.UsedInSlot AMMO_SLOT8;
 	}
 	States
 	{
diff --git a/zscript/minigun.zsc b/zscript/minigun.zsc
index cf43603..d956e45 100644
--- a/zscript/minigun.zsc
+++ b/zscript/minigun.zsc
@@ -24,7 +24,7 @@ Class Tier6Weapon : RandomSpawner2 replaces PlasmaRifle
 	}
 }
 
-Class MiniAmmo : UTAmmo
+Class MiniAmmo : Ammo
 {
 	Default
 	{
@@ -35,7 +35,6 @@ Class MiniAmmo : UTAmmo
 		Ammo.BackpackAmount 100;
 		Ammo.BackpackMaxAmount 199;
 		Ammo.DropAmount 50;
-		UTAmmo.UsedInSlot AMMO_SLOT2|AMMO_SLOT7;
 	}
 	States
 	{
diff --git a/zscript/powerups.zsc b/zscript/powerups.zsc
index c44737d..489a268 100644
--- a/zscript/powerups.zsc
+++ b/zscript/powerups.zsc
@@ -101,7 +101,7 @@ Class DamageAmplifier : Powerup
 	}
 }
 
-// Backpack that handles UT ammo types
+// Backpack that only gives ammo for valid weapons
 Class UTBackpack : BackpackItem replaces Backpack
 {
 	override Inventory CreateCopy( Actor other )
@@ -111,7 +111,7 @@ Class UTBackpack : BackpackItem replaces Backpack
 		for ( int i=0; i<AllActorClasses.Size(); i++ )
 		{
 			let type = (class<Ammo>)(AllActorClasses[i]);
-			if ( !type || ((type.GetParentClass() != 'Ammo') && (type.GetParentClass() != 'UTAmmo')) ) continue;
+			if ( !type || (type.GetParentClass() != 'Ammo') ) continue;
 			// check that it's for a valid weapon
 			bool isvalid = false;
 			for ( int j=0; j<AllActorClasses.Size(); j++ )
@@ -170,7 +170,7 @@ Class UTBackpack : BackpackItem replaces Backpack
 		{
 			for ( let probe = Owner.Inv; probe; probe = probe.Inv )
 			{
-				if ( (probe.GetParentClass() != 'Ammo') && (probe.GetParentClass() != 'UTAmmo') ) continue;
+				if ( probe.GetParentClass() != 'Ammo' ) continue;
 				if ( probe.Amount >= probe.MaxAmount && !sv_unlimited_pickup ) continue;
 				int amount = Ammo(probe).Default.BackpackAmount;
 				// extra ammo in baby mode and nightmare mode
diff --git a/zscript/pulsegun.zsc b/zscript/pulsegun.zsc
index c84b8ba..d0d9fb2 100644
--- a/zscript/pulsegun.zsc
+++ b/zscript/pulsegun.zsc
@@ -16,7 +16,7 @@ Class Tier4Weapon : RandomSpawner2 replaces Chaingun
 	}
 }
 
-Class PulseAmmo : UTAmmo
+Class PulseAmmo : Ammo
 {
 	Default
 	{
@@ -27,7 +27,6 @@ Class PulseAmmo : UTAmmo
 		Ammo.BackpackAmount 50;
 		Ammo.BackpackMaxAmount 199;
 		Ammo.DropAmount 25;
-		UTAmmo.UsedInSlot AMMO_SLOT5;
 	}
 	States
 	{
diff --git a/zscript/ripper.zsc b/zscript/ripper.zsc
index 9cd99fc..ccd9e65 100644
--- a/zscript/ripper.zsc
+++ b/zscript/ripper.zsc
@@ -1,4 +1,4 @@
-Class RipperAmmo : UTAmmo
+Class RipperAmmo : Ammo
 {
 	Default
 	{
@@ -9,7 +9,6 @@ Class RipperAmmo : UTAmmo
 		Ammo.BackpackAmount 50;
 		Ammo.BackpackMaxAmount 75;
 		Ammo.DropAmount 25;
-		UTAmmo.UsedInSlot AMMO_SLOT6;
 	}
 	States
 	{
diff --git a/zscript/shockrifle.zsc b/zscript/shockrifle.zsc
index c24304f..f16e4ac 100644
--- a/zscript/shockrifle.zsc
+++ b/zscript/shockrifle.zsc
@@ -1,4 +1,4 @@
-Class ShockAmmo : UTAmmo
+Class ShockAmmo : Ammo
 {
 	Default
 	{
@@ -9,7 +9,6 @@ Class ShockAmmo : UTAmmo
 		Ammo.BackpackAmount 20;
 		Ammo.BackpackMaxAmount 50;
 		Ammo.DropAmount 10;
-		UTAmmo.UsedInSlot AMMO_SLOT4;
 	}
 	States
 	{
@@ -869,7 +868,7 @@ Class ShockRifle : UTWeapon
 	}
 }
 
-Class EnhancedShockAmmo : UTAmmo
+Class EnhancedShockAmmo : Ammo
 {
 	Default
 	{
@@ -880,7 +879,6 @@ Class EnhancedShockAmmo : UTAmmo
 		Ammo.BackpackAmount 0;
 		Ammo.BackpackMaxAmount 25;
 		Ammo.DropAmount 5;
-		UTAmmo.UsedInSlot AMMO_SLOT4;
 	}
 	States
 	{
diff --git a/zscript/sniperrifle.zsc b/zscript/sniperrifle.zsc
index 05dbfbf..e7532c5 100644
--- a/zscript/sniperrifle.zsc
+++ b/zscript/sniperrifle.zsc
@@ -1,4 +1,4 @@
-Class RifleAmmo : UTAmmo
+Class RifleAmmo : Ammo
 {
 	Default
 	{
@@ -9,7 +9,6 @@ Class RifleAmmo : UTAmmo
 		Ammo.BackpackAmount 20;
 		Ammo.BackpackMaxAmount 50;
 		Ammo.DropAmount 10;
-		UTAmmo.UsedInSlot AMMO_SLOT10;
 	}
 	States
 	{
diff --git a/zscript/utcommon.zsc b/zscript/utcommon.zsc
index f121ee1..2b8842a 100644
--- a/zscript/utcommon.zsc
+++ b/zscript/utcommon.zsc
@@ -7,7 +7,7 @@ Class UTPlayer : DoomPlayer
 		Player.StartItem "Enforcer";
 	}
 
-	// Have to modify the give cheat to recognize UT ammo and handle UT armor
+	// Have to modify the give cheat to handle UT armor
 	override void CheatGive( String name, int amount )
 	{
 		if ( PlayerNumber() != consoleplayer )
@@ -39,7 +39,7 @@ Class UTPlayer : DoomPlayer
 			for ( int i=0; i<AllActorClasses.Size(); i++ )
 			{
 				let type = (class<Ammo>)(AllActorClasses[i]);
-				if ( !type || ((type.GetParentClass() != "Ammo") && (type.GetParentClass() != "UTAmmo")) )
+				if ( !type || (type.GetParentClass() != "Ammo") )
 					continue;
 				// Only give if it's for a valid weapon, unless using "give everything"
 				bool isvalid = false;
@@ -158,32 +158,6 @@ Class UTPlayer : DoomPlayer
 	}
 }
 
-enum EAmmoSlot
-{
-	AMMO_SLOT10 = 1,
-	AMMO_SLOT1 = 2,
-	AMMO_SLOT2 = 4,
-	AMMO_SLOT3 = 8,
-	AMMO_SLOT4 = 16,
-	AMMO_SLOT5 = 32,
-	AMMO_SLOT6 = 64,
-	AMMO_SLOT7 = 128,
-	AMMO_SLOT8 = 256,
-	AMMO_SLOT9 = 512,
-};
-
-Class UTAmmo : Ammo
-{
-	int usedinslot;	// bitfield indicating which weapon slots use this ammo
-
-	Property UsedInSlot : usedinslot;
-
-	Default
-	{
-		UTAmmo.UsedInSlot 0;
-	}
-}
-
 // Random Spawner that passes through dropped status to items
 Class RandomSpawner2 : RandomSpawner
 {
diff --git a/zscript/warheadlauncher.zsc b/zscript/warheadlauncher.zsc
index b6c30a7..b08866a 100644
--- a/zscript/warheadlauncher.zsc
+++ b/zscript/warheadlauncher.zsc
@@ -1,5 +1,5 @@
 // shouldn't be placed in the world (it wasn't in UT99)
-Class WarheadAmmo : UTAmmo
+Class WarheadAmmo : Ammo
 {
 	Default
 	{
@@ -11,7 +11,6 @@ Class WarheadAmmo : UTAmmo
 		Ammo.BackpackMaxAmount 2;
 		Ammo.DropAmount 1;
 		Inventory.RespawnTics 2100;
-		UTAmmo.UsedInSlot AMMO_SLOT10;
 	}
 	States
 	{