{"product_id":"faxon-firearms-duty-series-ar15-barrel-5-56nato-1-8-twist-4150-nitride-16-pencil-profile-mid-length","title":"Faxon Firearms Duty Series AR15 Barrel 5.56NATO 1:8 Twist 4150 Nitride - 16\" | Pencil Profile | Mid Length","description":"Quality is imbued into our barrels from the start. We start with the best materials, either certified 4150 Mil-Spec steel or 416-R Stainless. From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges.  Technical Specifications  Barrel Material: 4150 CMV Steel Barrel Type: Button Rifled  Barrel Caliber: 5.56 Barrel Twist: 1:8 Barrel Length: 16” Barrel Profile:  Pencil Barrel Gas System: Mid Inside Finish: Nitride Outside Finish: Nitride Muzzle Thread: 1\/2-28 Gas Block Diameter: .625\"  Gas Block Journal Length: 1.1\" Barrel Extension: M4  Weight:  1.20  lbs Magnetic Particle Inspected! 11-degree Target Crown","brand":"Faxon Firearms","offers":[{"title":"Default Title","offer_id":44685919518939,"sku":"15A58M16NPQ","price":173.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/1072\/7131\/files\/179889709.webp?v=1738345758","url":"https:\/\/www.atcostammo.com\/products\/faxon-firearms-duty-series-ar15-barrel-5-56nato-1-8-twist-4150-nitride-16-pencil-profile-mid-length","provider":"AtCostAmmo.com","version":"1.0","type":"link"}