{"product_id":"faxon-firearms-duty-series-ar15-barrel-5-56nato-1-8-twist-4150-nitride-11-5-gunner-profile-mid-length","title":"Faxon Firearms Duty Series AR15 Barrel 5.56NATO 1:8 Twist 4150 Nitride - 11.5\" | Gunner Profile | Mid Length","description":"Behind the gas block will be a Government profile tapering to a shoulder and 1.1\" journal .625 gas block. In front of the gas block, the barrel will continue straight to a 1\/2x28 muzzle with full shoulder.  Faxon Firearms barrels are the pinnacle of value. Manufactured 100% in-house from cradle-to-grave, these barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy.  Technical Specifications  Barrel Material: 4150 GBQ Steel Barrel Type: Button Rifled  Barrel Caliber: 5.56 NATO* Barrel Twist: 1:8 Barrel Length: 11.5\" Barrel Profile: BIG Gunner Hybrid Barrel Gas System: Mid** Inside Finish: QPQ Nitride Outside Finish: QPQ Nitride Muzzle Thread: 1\/2-28 TPI (Threads Per Inch) Gas Block Diameter: .625\" Barrel Extension: M4 Weight: 1.14 lbs Magnetic Particle Inspected! 11-degree Target Crown  *As this barrel is likely to be used in full-auto applications, we are opting to stick with a 5.56 chambering to ensure absolute safety for our customers.  **Due to the short dwell of the barrel, the gas port will be larger than most barrels. Customers are encouraged to use an adjustable gas block for optimum functionality. ","brand":"Faxon Firearms","offers":[{"title":"Default Title","offer_id":44685918470363,"sku":"15A58M11NGQ","price":160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/1072\/7131\/files\/179889628.webp?v=1738345629","url":"https:\/\/www.atcostammo.com\/products\/faxon-firearms-duty-series-ar15-barrel-5-56nato-1-8-twist-4150-nitride-11-5-gunner-profile-mid-length","provider":"AtCostAmmo.com","version":"1.0","type":"link"}