This famous German replica is powered by CO2 and is made of mostly metal parts to give it its realistic weight. With a double action trigger you can shoot as fast as you can pull the trigger or until your 21-round magazine runs out of BBs.FeaturesFamous German replicaCO2 powered semi-auto BB action21-shot drop free metal magazineDouble action onlyCO2 housing in the gripFixed front and rear sightsAll metal partsManual safetyMetal barrel