About EMR-15Our extended magazine release is a superior drop-in replacement for all mil-spec mag releases and is meticulously machined from the finest materials in the USA. The parts are machined from 7075 aluminum and then hard coat anodized after a heavy acid etch process which dulls the machined surface and provides a superior protective finish. A great upgrade for any rifle, but especially for featureless rifles in restricted states, where alternate grips may make it difficult to reach smaller mag releases.The button is machined on the back side so that it can be flipped and used by itself (without the paddle) if desired. Weight: .17 oz. w/Hardware Material: 7075 Aluminum Size: .8 x .65 x .47 Fits most AR pattern lowers receivers