FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply. 56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply 36420 is a great way to make sure you have a top of the line barrel that will not let you down when you need it most. Manufactured with a Chrome Lined Chamber and Bore FN America AR-15 Hammer Forged Barrel is designed to handle full-auto hammer forged barrel with a 1/2 x 28 Inch threaded muzzle and a CMV steel lining to ensure maximum accuracy. This FN America AR-15 Barrel features a one-piece chrome lined design and a hammer forged barrel allowing for greater strength and a tighter tolerance control between bore and chamber. The FN America 14.5 Inch Hammer Forged Barrel has an MP tested that ensures each barrel is free of microstresses and/or cracks. Specifications for FNH USA AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply 36420: Mfg Item Num: 36420 Type: BARRELS - RIFLE Barrel Length: 14.5 Caliber: 5.56mm NATO Caliber-Gauge: .223 REM. Master Model Header: AR-15 Hammer Forged Barrel The FN America AR-15 Hammer Forged Barrel 5.56 NATO 14.5 Inch Manganese Phosphate Finish All NFA Rules Apply 36420 is a quality addition to the FN America lineup. For more great deals on AR15 Barrels by FN America please browse our FNH USA Gun Parts page.