The Shadow Systems XR920 Foundation combines practical ergonomics with an optics-ready configuration and a Holosun 507C X3 red dot included. Chambered in 9mm, this pistol features a 4-inch match-grade nitride barrel, a textured frame, and interchangeable backstraps to accommodate different hand sizes. The Foundation slide features pocket-cut serrations and an optic cut designed to accommodate direct mounting of most major optic brands. Steel sights pair a black serrated rear with a white-dot front for a lower-third co-witness with most optics. Additional features include a carbon steel guide rod, a drop-safe polymer trigger, and a rifled barrel rated for +P ammunition. The package includes two Magpul magazines and three interchangeable backstraps. Specifications Manufacturer: Shadow Systems Model: XR920 Foundation Caliber: 9mm Capacity: 17+1 Barrel Length: 4" Barrel: Rifled, Match-Grade Nitride Steel Ammunition Compatibility: Rated for +P ammunition Frame: Black Foundation frame with wraparound texture Slide: Foundation slide with pocket-cut serrations Optic: Holosun 507C X3 Red Dot Optic Mounting: Optic cut for direct mounting of compatible optics Sights: Black serrated rear and white-dot front Guide Rod: Carbon Steel Trigger: Drop-Safe Polymer Grip Configuration: Three interchangeable backstraps Included Magazines: Two Magpul magazines Holster Compatibility: Glock 19/19X Gen4 holsters Get it at BattleHawk Armory!