5-round magazine. Weighs 3.2 ounces Sturdy, impact resistant polymer with textured grip. Anti-tilt super follower. Heavy duty, non-memory, and non-corrosive stainless steel spring. Made in the U.S.A. Material able to cerakote. Fits the following calibers: .243 Winchester .22-250 Rem (works at reduced capacity) .260 Remington 6mm Creedmoor .6mm XC 6.5 Creedmoor 7mm-08 Remington .308 Winchester