Glock G17 Magazine Features The Glock G17 Magazine is built to factory specification for the Glock 17 and Glock 34 in 9mm Luger holding 15 rounds in a durable black polymer body. A hardened steel insert runs through the magazine body reinforcing feed lips and the body against the wear that comes from repeated loading firing and reloading cycles. This factory construction is the same used in magazines shipped with new Glock pistols giving shooters a genuine OEM option rather than an aftermarket alternative. Reliable feeding is critical in any defensive or duty pistol and a factory Glock magazine is built specifically to meet that standard. New Glock magazines can be difficult to load to full capacity right out of the box and the last round in particular may resist seating until the magazine spring has gone through a break-in period. Loading the magazine with all but the final round and letting it sit for a few days helps compress the spring and ease future loading. Cycling the magazine from full to empty several times can also speed up this break-in process. For Glock 17 and 34 owners who need a spare replacement or additional factory magazine this 15-round 9mm magazine is a straightforward reliable choice for sale at GrabAGun. Glock G17 Magazine Specifications Manufacturer: Glock Model: G17 Magazine Type: Handgun Magazine Caliber: 9mm Luger Capacity: 15 Rounds Finish: Black Polymer / Hardened Steel Insert Compatible Hosts: Glock 17 Glock 34 Available At: GrabAGun