Alpine Innovations Large Caliber Ammo Slicker with Sheet Window - Vanish Shadow - Ammo Slicker is an innovative ammo holder built with special non-slip neoprene and a catch pocket to keep ammo secure. Ammo Slicker completely covers the ammo and fits most rifle butt-stocks on the market. Large Caliber Vanish Shadow Color New Dope Sheet Window Secure Design- Never Drops Ammo Quick Access Grips Butt-Stock With Non-Slip Neoprene Adjustable- Flexible Large Caliber Fits: .308 And .270 Up To .338 And Holds 7 Rounds