The KCI 50-round drum magazine for GlockA(R) 22 / 23 is the ultimate high-capacity mag for one of America's favorite polymer-framed pistols. It's constructed from super-tough reinforced polymer and steel, with a heat-treated chrome silicon spring to ensure smooth, reliable feeding. KCI's ratcheted lever system makes it easy to shove all 50 rounds in fast without wearing out your fingers. You can even store this magazine fully loaded without damaging the feed lips. Fits Gen3 or later .40 S&W Glock pistols (G22 & G23) Also fits AR-15s & other rifles that use Glock pistol mags Sturdy steel & polymer construction Quick load lever Mfg: Kci Usa