This BB gun is a replica pistol based on the S&W Military and Police firearm. The Smith & Wesson M&P 40 Blowback Air Pistol is a BB repeater powered by one 12g CO2 cylinder that hides in the grip of the BB pistol. An integrated accessory rail underneath the muzzle is a great place to add a tactical flashlight or an airgun laser. An element of realism is added with a 15-shot drop out BB magazine and blowback action. The Smith & Wesson M&P Air Pistol has a manual safety, interchangeable backstraps, fixed sights, and a single action trigger that's amazingly close to the actual handgun. This BB replica is not only a great BB gun for some fun plinking, but also makes a great target shooting and training pistol for S&W M&P firearm owners.