GLOCK® G17 Gen 5 CO2 powered blowback action .177 caliber pellet pistol. Powered by affordable and reliable 12-gram CO2, this pellet pistol uses a unique belt-fed magazine that allows for blowback action. Featuring GLOCK® grip texturing and all other GEN 5 slide and frame characteristics, this pellet pistol offers airgun fans the latest in airgun and GLOCK® design and function. Great for plinking!