The LMT Defense 10.5" .300 Blackout barrel assembly delivers premium performance in a compact, hard-hitting package ideal for short-barreled rifles, PDWs, and suppressed setups. Crafted with LMT's renowned cold hammer-forged, chrome-lined barrel construction, this 10.5-inch barrel features a 1:7 RH twist rate optimized for stabilizing a wide range of .300 Blackout projectiles-from lightweight supersonic loads to heavy subsonic rounds-ensuring exceptional accuracy and reliability even in high-volume or adverse conditions. The assembly includes a low-profile gas block pinned for secure alignment and consistent cycling, making it a drop-in ready upgrade or core component for custom AR-15 builds chambered in .300 BLK. Engineered to LMT's strict military specifications, this barrel assembly pairs seamlessly with LMT MRP uppers or standard mil-spec receivers, offering quick-change compatibility on MRP platforms for rapid caliber swaps or field maintenance without losing zero. The chrome lining enhances corrosion resistance and extends barrel life under sustained fire, while the compact 10.5-inch length balances maneuverability in close-quarters scenarios with effective velocity for both supersonic and subsonic applications-perfect when paired with a suppressor for reduced signature and enhanced terminal performance. Built from high-grade steel with precise machining, it maintains sub-MOA potential with match-grade ammunition, making it a favorite among professionals, tactical users, and .300 Blackout enthusiasts. This LMT Defense barrel assembly stands out for its battle-proven durability, flawless fitment, and versatility in multi-role configurations, whether for home defense, duty use, hunting, or competition. The combination of LMT's legendary quality control, chrome-lined bore, and optimized gas system ensures reliable function across various ammunition types and suppressor backpressure profiles. Compact yet powerful, it transforms any compatible AR lower into a versatile .300 Blackout platform ready for demanding environments. Upgrade your .300 Blackout build with the LMT Defense 10.5" barrel assembly-shop this elite chrome-lined component now and add it to your rifle at Battlehawk Armory. Specifications: Weight: 1.644 lbs Caliber: .300 Blackout Barrel Length: 10.5" Barrel Material: Chromoly (CB) Operating Method: Direct Impingement Rifling Twist Rate: 1:7"