Wayne’s Dog 1 Combo Leather Rifle Recoil Pad Buttstock with Gun Shell Slot Sling

12GA Shell holder Shotgun Sling? :This sling is specially made for bullet models such as 12 Guage. Note that 20GA and 16GA are not available. 16GA Shell holder Shotgun Sling? :This sling is specially made for bullet models such as 16 Guage.