Ruger / Duramag AR-556 MSR .450 Bushmaster 5-Round Magazine

This .450 Bushmaster, 5-round magazine was designed to properly support straight-walled, big-bore rounds in an AR-556 magazine well. It utilizes an internal bracing system and laser-welded 410 stainless-steel body for a superior magazine that controls the round stack, prevents misalignment and ensures reliable feeding. Made in the USA by DURAMAG.