Colt LE6921-EPR 5.56mm 14.5" Bbl Matte Black Conversion Kit LE6921EPR-CK

The Colt LE6921 EPR Upper Receiver Conversion Kit is a complete centerfire upper assembly chambered in 5.56mm NATO, modernizing Colt's standard-issue law enforcement line with a high-performance, modular handguard infrastructure. This factory kit provides a direct drop-in solution to convert any standard AR-15 lower receiver group into an Enhanced Patrol Rifle (EPR) tactical system. It features a 14.5-inch chrome-lined carbon steel barrel with an M4 contour, running on a standard carbine-length direct gas impingement system. To maximize shot-to-shot accuracy, the barrel is completely free-floated within a premium aluminum Centurion Arms M-LOK handguard, which isolates hand pressure and yields a continuous top Picatinny rail for optics integration.