Features Heavy duty injection molded polymer frame w/ aluminum alloy slide Fully licensed by GLOCK w/ complete rollmarks on the slide and logos molded to the frame Traditional GLOCK sights; Functional GLOCK trigger safety; GLOCK accessory rail GLOCK Gen.4 rough texture technology for improved slip-resistant grip Uses KWC CO2 GLOCK magazines (not compatible with VFC magazines) Realistic gas blowback to simulate recoil and slide cycling Dual recoil springs give this pistol a snappy yet smooth recoil impulse