Strike Industries AR-15 Enhanced Magazine Catch - Black - The Strike Billet Magazine Catch Assembly features a billet magazine release button. Sculpted from a solid piece of 6061 aluminum, the button offers a functional and aesthetic upgrade to your AR. Deep serrations and ergonomic shape facilitates positive engagement and identification even in the dark or adverse conditions. Features Textured for positive feel and manipulation; Solid billet aluminum construction; Functional and aesthetic upgrade; Includes mag release springs;