Father Grigori's personal rifle/shotgun. It is not intended for player use and gives console errors. Annabelle follows all physics rules as if it were a prop_physics.
When weilded by the player, this appears to be the normal combat shotgun. However the behavior of the weapon is not uniform with that of the combat shotgun - only one shell is loaded into the gun at a time, and the ammo is limited as well. Lastly, the cooldown is much longer for this weapon.