SKU: SOLGWM4L89BSUPP145HUX
UPC: 669185246346
MPN: M4L89BSUPPER-14.5-556
The Sons of Liberty Gun Works L89 BS V2 5.56 14.5" Hux Blk is a precision-engineered upper receiver assembly built for operators who demand reliability and accuracy in intermediate-range engagements. Designed for law enforcement tactical teams, military special operations, and serious civilian shooters, this 5.56 NATO upper combines proven ergonomics with Sons of Liberty's reputation for quality manufacturing. The 14.5-inch barrel length balances velocity retention with maneuverability, making it ideal for close-quarters combat scenarios where compact handling matters without sacrificing ballistic performance.
The L89 BS V2 designation indicates this upper features Sons of Liberty's proprietary design optimizations and precision tolerances that minimize bolt carrier group wear and maximize consistency shot-to-shot. The 14.5-inch barrel is configured to deliver effective 5.56 NATO performance while maintaining a lightweight profile at approximately 1 pound, critical for extended operations where fatigue directly impacts marksmanship. The Hux black finish provides a durable, corrosion-resistant coating suitable for harsh environments, and the upper receiver's flat-top design accepts standard Picatinny rail optics for unlimited mounting flexibility. This assembly ships ready to pair with compatible lower receivers and fire control groups, requiring only basic assembly knowledge.
This upper receiver assembly is best suited for shooters building AR-15 platforms or upgrading existing rifles with a proven, mil-spec compatible upper. Law enforcement agencies transitioning to shorter platforms for vehicle operations and building clearing will appreciate the 14.5-inch length and established reliability record. Compatibility extends to any AR-15 lower receiver manufactured to DPMS or Milspec standards, making integration straightforward for gunsmiths and experienced builders. Installation pairs the upper assembly directly to a stripped lower receiver, then install your bolt carrier group and charging handle for immediate readiness.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.