The Strike Industries 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. The blind thread and color anodized options provide for a unique, custom look to your ARFeaturesTextured for positive feel and manipulationSolid billet aluminum constructionFunctional and aesthetic upgradeIncludes mag release springs