Choate Tool H&R Handi Rifle M-6 StockAll But 10 Ga. It will hold from 30-06 length ammo can also use 308 Win. 243 Win. 44 Rem Mag 45 Colt 454 Casull and .410 shotgun ammo. The tension can be adjusted to vary how hard the rounds are to remove by tightening the adjustment screws on the side of the shell holder. Great way to always have additional ammo for your single shot rifle Specifications for Choate Tool H&R Handi Rifle M-6 Stock: Manufacturer: Choate Tool Color: Black Country of Origin: USA Features of Choate Tool H&R Handi Rifle M-6 Stock H&R HandiRifle and .410 shotgun Mark 6 Stock Package Contents: Choate Tool H&R Handi Rifle M-6 Stock Choate Tool CMT-19-01-11: H&R Handi Rifle M-6 StockAll But 10 Ga