The Genuine Glock ® Pistol Magazine ensure your Glock semi-auto pistol will function flawlessly at the moment of truth. Glock magazines are constructed from a rigid metal tube, then encased with Glock’s high-tech polymer, making them virtually indestructible. High-quality springs and shell followers ensure reliable feeding from the first time the pistol cycles on a fully compressed spring down to the last shot. All models include a round count indicator on rear face of magazine body and a standard factory baseplate. When your life is on the line, there’s no other mag to trust in Glock pistols other than genuine Glock Pistol Magazines. Genuine Glock factory magazine Rigid metal tube inner layer High-tech polymer exterior Premium springs and shell followers Round count indicator Standard factory baseplate.