XTech Tactical Steel Reinforced Magazine Features The Xtech Tactical Steel Reinforced Magazine for Glock 17 Gen 4 upgrades over the Glock factory magazine with a 17-7 stainless steel spring delivering stronger and more consistent feed pressure round after round. That stainless spring resists corrosion far better than a standard factory spring an advantage for a magazine kept loaded for extended storage or daily carry. The steel reinforced magazine body adds genuine durability against the drops and hard use that a range or duty magazine experiences. Together these upgrades give the shooter a magazine built to outlast the factory original it replaces. A proprietary Delrin baseplate with a no-stick additive follower keeps the magazine cycling smoothly and resists fouling from dirt or grime. This 17-round 9mm magazine is compatible with everything that fits a Gen4 Glock factory magazine giving it broad usefulness across the Glock 17 Gen 4 platform and compatible pistols. Sold as a two-pack it provides a matched set of upgraded spares for range use competition or daily carry. It is a dependable durable upgrade for Glock 17 Gen 4 shooters for sale at GrabAGun. XTech Tactical Steel Reinforced Magazine Specifications Manufacturer: Xtech Tactical Model: Steel Reinforced Magazine for Glock 17 Gen 4 Caliber: 9mm Capacity: 17 Rounds Compatible Hosts: Everything that fits a Gen4 Glock factory magazine Material: Polymer Steel Reinforced Spring: 17-7 Stainless Steel Baseplate Material: Delrin with No-Stick Additive Country of Origin: Made in the USA Available At: GrabAGun