GLOCK™ airguns and GLOCK™ airsoft guns come in a vareity of sizes and styles and each GLOCK pistol offered here at Umarex USA is an Officially licensed product of GLOCK. That's why no matter which GLOCK replica airgun or airsoft gun you choose you'll know you're getting a GLOCK air gun that's genuine. Choose from a CO2 BB gun pistol, or a green gas powered airsoft GLOCK, or an airsoft gun that uses CO2 to shoot 6mm airsoft BBs.