When considering the stringent testing guidelines and exacting requirements of military and law enforcement testing around the world, MEC-GAR magazines have met or exceeded the compliance guidelines. Representing the most superb functional reliability, MEC-GAR magazines are the most trusted magazines for military weapons, law enforcement, personal defense, sports and tactical pistols. Features: ALL METAL CONSTRUCTION WHICH DOES NOT REQUIRE THE MAGAZINE CATCH TO BE REPLACED Holds one additional round than the factory and it remains flush fit to the gun