Blackhawk’s Serpa Sportster Holster is designed for civilian concealed carry or range use. Constructed of injection molded polymer for long-lasting durability with the patented Auto-Lock technology. Features passive retention detent adjustment screw; speed-cut design for rapid draw, target acquisition and re-holster; paddle platform and the “L” shaped button which is optimized for security and performance. Fits Shoulder, S.T.R.I.K.E., Quick Disconnect and Tactical Holster Platforms. Gun metal gray holster body with black locking mechanism. Fits Glock 20/21/37 & S&W M&P .45 & 9/.40 Pro.