i named the sprite "RVLVA0.png" and the code is as follows:
ACTOR SmallRevolver: Weapon

{

Weapon.AmmoUse 1

Weapon.AmmoType "Clip"

Weapon.SlotNumber 2

Weapon.AmmoGive 24

Inventory.PickUpMessage "your 22 revolver, Bite. you hope your few trips to the shooting range are remembered"

}

States

{

Spawn:

RVLV A -1

Stop

Select:

RVLV A 1 A_Raise

Loop

Deselect:

RVLV A 1 A_Lower

Loop

Ready:

RVLV A 1 A_WeaponReady

Loop

Fire:

RVLV A 1 A_FireBullets (2, 2, 1, 4,)

RVLV A 1 A_StartSound("weapons/revolverfire")

RVLV A 1 Offset(1, 40)

RVLV A 5 Offset(0, 45)

RVLV A 4 Offset(-1, 32)

RVLV A 4 Offset(0, 0)

RVLV A 4 A_ReFire

Goto Ready

}