The Sons of Liberty Gun Works M4-L89 14.5" 5.56 Upper Receiver Group is designed for serious firearm enthusiasts and tactical users. This complete upper receiver features a 14.5" pinned barrel, ensuring compliance while offering exceptional performance. Built with the L89 7-sided handguard, forged upper, and Liberty Fighting Barrels, this assembly is perfect for your next AR-15 build or competition. The integrated QD mounts at the barrel nut provide convenient attachment points for slings, while the Drivelock barrel nut system ensures a secure fit. Intended Use: Ideal for competition and tactical applications. Key Benefits: Designed for high performance and reliability in various scenarios. Key Features: - 14.5" 5.56 NATO Barrel - 13.75" L89 Handguard - HUXWRX Flash Hider - 7-Sided M-LOK Slots - Integral QD's at Barrel Nut on Both Sides - Drivelock Barrel Nut System Summary: Whether you're building a new rifle or upgrading your existing setup, the M4-L89 Upper Receiver Group offers the quality and functionality that responsible gun owners demand, making it a reliable choice for both competitive shooting and home defense.