M4 Carbine 223 Rem/5.56 16.1" BBL No Furniture A2 Sight

This semi-automatic carbine in 5.56 NATO delivers a proven platform built for customization. The 16.1-inch chrome-lined barrel features a 1:7 twist and muzzle brake, while the matte black finish and aluminum construction ensure durability. At 32 inches overall length, the rifle accommodates a pistol grip configuration. Designed as a modular build platform, this upper receiver assembly arrives stripped of handguard, buttstock, trigger guard, magazine, and rear sight, enabling builders to select aftermarket components to specification. The OEM1 variant accepts drop-in handguards using factory barrel nut and retaining ring, while the OEM2 incorporates a low-profile gas block for free-float handguard compatibility. Picatinny rail mounting points support optics and accessories. Ideal for dealers and enthusiasts seeking a quality foundation for AR-platform builds.