Umarex T.A.C. Converter
If you own a HK USP, S&W MP40 BB gun, Umarex XBG BB gun, Combat Zone Enforcer Airsoft gun or Walther P99 DAO Airsoft gun you can quickly convert your weapon to a rifle with the Umarex T.A.C. Converter system. It comes complete with 4 adapters, folding grip and stock. Not only does thing give new life to your pistol, it gives you more control over your gun and provides mounting locations for accessories such as laser sights and flashlights. For a very small amount of money you can totally transform your pistol!