Shield Arms DS20 Magazine for Glock 17 Features The Shield Arms DS20 is heat treated to RHC 45-50 for a steel body that resists wear and holds its shape under repeated hard use. Hardened steel construction combined with the black nitrocarburize finish gives the magazine corrosion resistance and a smooth consistent feel during reloads. The over-insertion tabs stamped into the body stop the magazine from being driven too far into the magwell protecting the feed lips and keeping the gun running reliably. Designed to fit flush with 17-size Glock frames the DS20 adds three extra rounds over a factory magazine without adding noticeable bulk to the grip. Custom high impact nylon components inside the DS20 are engineered for smooth consistent feeding across thousands of rounds matching OEM-level reliability shooters expect from a duty-grade magazine. The magazine is also compatible with Shield Arms magwells giving owners of modified Glock pistols a drop-in option that works with their existing setup. Built for Glock pistols and Gen 3 clones alike the DS20 gives shooters added versatility whether they run a stock Glock 17 or a customized build. For a shooter looking to boost capacity while keeping factory-like dimensions the Shield Arms DS20 is a straightforward dependable upgrade. Shield Arms DS20 Magazine for Glock 17 Specifications Manufacturer: Shield Arms Model: DS20 Caliber: 9mm Capacity: 20 Rounds Color: Black Finish: Nitride Material: Steel Compatible Hosts: Glock 17 19 26 45 Available At: GrabAGun