USAirsoft considers the KWA KMP9 Gas Blowback Machine Pistol as one of the greatest airsoft guns made. The KMP9 has rails for mounting accessories and can use CQB bolt assembly that can be swapped to reduce muzzle velocity in CQB games. Highly compact, it is indeed a good GBB, but is it one of the greatest airsoft guns? Find out in the video if you agree.