USA Leather Gun Shell Slot Sling Rifle Strap for 12GA 16GA 20GA. 308.30-30.22LR

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. 20GA Shell holder Shotgun Sling? :This sling is specially made for bullet models such as 20 Guage.