The barrel on an AR-15 originally operates under a 'gas impingement' system' by tapping gas off of the barrel and cycling it back through the gas system to assist the bolt carrier in unlocking and extracting the spent cartridge. AR-15 Barrels come in four different specifications for gas systems, Pistol, Carbine, Mid-Length, and Rifle. AR-15 Barrels vary between profiles as well as from Government, to Heavy, and Slim. Thanks to the modularity of AR-15, you can choose different calibers starting with the barrel, each with its specific twist rates. Choosing your barrel for your next AR-15 build has never been easier.
Brand Info: Faxon Firearms engineers and manufactures complete upper receivers that will fit any mil spec AR-15 lower platform. We are intensely focused on providing a new and innovative upper that will set the standard for the rest of the industry. Faxon machining is ISO accredited and can put over a 100 years of machining experience with its experienced staff, operators, and engineers. Faxon Machining has machined more than 30,000,000 parts, has performed more than 6,500,000 hours of machining, and more than 125,000 hours of engineering services for customers. Some of the company’s machined parts have gone into the most complex, expensive and risk intense mechanical systems ever devised. Throughout the years, Faxon Machining, with extensive certifications and world class performances has earned its way to working with world class customers. This has resulted in providing parts used on the ocean floor, for the oil industry, in theaters of combat protecting our warfighters, in the cars you drive, in the aircraft you fly in, on the Space Station, and now on Mars. Now all of this experience and capability has been focused with the goal of providing a unique and innovative upper receiver for the AR-15 platform.
About This Barrel: The Barrel is made by Faxon it is 16" long, and is machined from 4150 Chrome Moly Vanadium and finished in a Nitride appearance. Chambered for 5.56 NATO, using a Gunner/Pencil design.
About the Profile: Pencil/Slim- Pencil/Slim Profile barrels are designed to reduce the weight on the front of the rifle significantly, by removing as much material as necessary to retain a structurally sound barrel. Pencil barrels are a perfect choice in your next weight-saving build!
Barrel Classification: Rifle
Length: This Barrel is designated as rifle barrel with a overall 18" length.
Caliber: 5.56NATO - This barrel is chambered to fire both 5.56 NATO and .223 Remington, the most commonly used round designed for the AR-15 platform.
Material: 4150 CrMoV - Chrome-Moly Vanadium, or simply "CMV", is the official mil-spec gun steel developed by Colt Firearms for the military-issued M16 and M4. It contains the same elements as 4150 steel. It also contains Vanadium. Vanadium significantly increases the strength, hardness, and high-temperature stability of the steel.
Finish: Nitride - Nitriding is a process during manufacturing that diffuses nitrogen into the steel to make a case-hardened surface for improved resistance and strength. A Nitrided barrel typically has a gloss black texture.
Thread Pitch: 1/2x28 - This threading is commonly found on barrels chambered in 5.56, .223, and .224. This will allow the installation of most muzzle devices such as flash hiders, blast cans, and compensators threaded to 1/2x28 threads.
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