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Rock Slide USA Pistol Upper .45 ACP for Glock 21 RS2FS45-RMR FDE

Rock Slide USA Pistol Stripped Upper .45 ACP. Compatible with Glock 21/20 Lowers. RS2 Model with cooling vents. Flat Dark Earth Cerakote finish. Takes standard Glock 21 internal parts, sights, and barrels. Cut for a Trijicon RMR optic.