The AR-STONER(TM) SS magazine for the 450 Bushmaster features a stronger stainless steel body for longer service life than the typical standard aluminum bodied magazine. The enhanced single shot anti-tilt follower and chrome silicon spring provide reliable feeding even after extended storage and use. Made to military specifications, the AR-STONER(TM) magazine can be counted on at the range or in the field. FeaturesStainless Steel BodyPolymer Anti-Tilt FollowerChrome Silicon Spring