TacLoc elevates your holster to a weapon-response tool that secures your gun, speeds your draw and optimizes your laser like nothing else. Custom fit matches your Viridian-equipped pistol flawlessly. Holstering the gun secures it perfectly. Drawing releases it smoothly and the Enhanced Combat Readiness (ECR) Instant-On system ignites your laser instantly, automatically, the second you draw. It's the most advanced, most effective carry setup you can get. This X series holster will fit a S&W M&P 9/40 firearm.