M4-L89 5.56x45 NATO Assembled Upper Receiver - M4-L89 5.56x45 NATO 13.9"BBL 13.75" L89 Rail W/Asr

Sons of Liberty Gun Works

Resumen

The M4-L89 5.56x45 NATO Assembled Upper Receiver is a complete upper designed for the AR-15 platform, featuring a 13.9-inch barrel that balances maneuverability with effective range. With a standard M4 receiver type and a thread pitch of 1/2x28, this upper is compatible with a wide range of muzzle devices and accessories, making it a versatile choice for builders. This configuration is often utilized in compact builds tailored for tactical applications or close-quarters engagements.