Colt LE6945 5.56mm 10.3" Bbl One Piece Matte Black Upper Receiver Conversion Kit LE6945CK

The Colt LE6945 Monolithic Upper Receiver Conversion Kit is a complete centerfire short-barreled upper assembly chambered in 5.56mm NATO, featuring a one-piece monolithic upper receiver and quad-rail system machined from a single aluminum forging. This ultra-compact, close-quarters battle (CQB) layout completely free-floats the barrel, isolating hand pressure to ensure superior accuracy and guaranteeing that rail-mounted tactical optics, lasers, or night-vision devices retain their zero without deflection.