AR-15 5.56 NATO 14.5" AR Barrel
Designed To Military Specifications
General Barrel Info: The Barrel on an AR-15 pistol operates through a 'gas impingement' system, where gas is tapped from off from the barrel and cycle back through a connected gas system, to help the bolt carrier in unlocking, and extracting a spent cartridge. Pistol length AR-15 barrels come in two gas lengths, Pistol & Carbine. AR-15 Pistol barrels can be chambered in a variety of different calibers, spanning from rifle to pistol cartridges. Thanks to the modularity of the AR-15 platform, your next pistol will be incredibly easy.
About This Barrel: The Barrel is made by Davidson Defense it is 14.5" long, and is machined from 4150 Chrome Moly Vanadium and finished in a Phosphate appearance. Chambered for 5.56 NATO, using a Government profile design, this barrel will fit your next AR-15 build perfectly.
About the Profile: Government - The government barrel profile is lightweight under the handguards, until just before the gas port. After the gas port, it gets heavier, out to the muzzle.
Barrel Classification: Pistol
Length: This Barrel is designated as a pistol length barrel with an overall length of 14.5".
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: Phosphate - Manganese Phosphate finishes are used on barrels to protect against corrosion and wear. Manganese Phosphate finished is considered for its toughness, and is used in multiple different applications such as aerospace, ordnance, and other firearms-related parts.
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.
Chrome Lined: Chrome Lined barrels have the added property of increased corrosion resistance in the bore from the hot gasses, powder, external elements, & friction from the projectile. Chrome lining is generally preferred for automatic fire as the chrome lining will protect the bore of the barrel during extended use.
Chrome Bore and Chamber:
One of the first modifications that were made to the original M16 in the mid 1960's was the addition of the chrome lined bore and chamber. It is now a world wide standard in the firearms industry for a battle rifle. The chrome bore and chamber is harder than the barrel steel and on the AR rifles will aid in chambering, extraction, and reliability. It increases velocity, and also resist against fouling and corrosion from extended use in the field. This gives the end user a longer barrel life with less required time in maintenance and cleaning.
HPT / MP Inspected Barrels:
Military specifications require that barrels undergo a HPT (High-Pressure Test) load as a part of quality assurance procedures. Commonly referred to as a proof load, the M197 is rated for 70,000 psi. This barrel is proof loaded and then MPI (Magnetic Particle Inspected) to detect any possible flaws in the barrels surface. This barrel is MP inspected with both circular and longitudinal magnetic fields to assure a high quality finished product.
Designed To Military Specifications
Caliber: 5.56 NATO
Profile: Military AR Barrel
Twist Rate: 1-7 T
Finish: Black Phosphate
Chamber and Bore: Chromium Plated/Chrome Lined
Thread Pitch: 1/2x28
Gas Block: Front Fixed Sight Post
Gas Length: Carbine
Packaging: VCI Bag (Vapor Corrosion Inhibitor bag, is a poly packaging film converted to a bag that is manufactured with added VCI chemistry. VCI molecules protect metals from corrosion by forming a thin, invisible layer on the surface.)
Please note: If the listing says "In-Stock" it means we have the item(s) in stock. Please check this LINK to view our most up to date shipping status.
Warranty, Returns & Terms: Davidson Defense Store offers a 30 day return, refund and exchange policy. You must email or call Davidson Defense Store and obtain an RMA number prior to any return, refund, or exchange. All returns must include the original order number, receipt or invoice, along with the customers billing address, shipping address, contact phone numbers, contact emails, and RMA number. Returns, refunds, and exchanges may take up to two weeks, not including transit times, for processing after we have received return product. Return shipping costs will be the responsibility of the returning party, with the exception of the wrong item being received or on warranty exchange during the first 30 days after delivery. Items returned for warranty will only be replaced or exchanged, no refund given on warranty items.