Features include stress-relieved, button-rifled barrel with a 1-9 right-hand twist, short chambered and crowned.
Requires finishing chambering, setting headspace, and exterior polish and blueing.
Brownells offers exclusive BCM Enhanced Lightweight Barrel Assembly Kits in 14.5” or 16.1” with a mid-length gas system and Enhanced Profile for improved weight, balance, and performance.
The barrels feature a continuous taper, no sharp handguard cap shoulder for better harmonics and accuracy, and are made from 11595E certified Mil-Spec Steel with chrome bores and 5.56 NATO chambers.
Each kit includes a phosphate finished .625 BCM Low Profile Gas Block, BCM Mid-Length Gas Tube, and barrels with USGI 1/7 Twist Rates, M4 Barrel Extensions, and HPT / MP Inspected manganese phosphate finish.
The Faxon GUNNER AR-15 barrel has a unique profile with a Government dimension to the .625” gas block and a pencil profile forward, optimizing weight distribution and heat resistance.
Constructed from 4150 CMV Steel, the barrel is button rifled, stress relieved, air-gauge tested, and 11 degree target crowned for superior accuracy.
Each barrel undergoes rigorous testing, including individual headspace checks with custom hardened gauges, and is finished in QPQ Nitride for durability.
The CMMG .22LR Barrel and Bolt kit is designed to convert an AR-15 upper to a dedicated .22LR setup.
A separate magazine purchase is required to complete the conversion for shooting.
The kit features a 16.1" barrel optimized for 36 grain plated nose bullets and round style hammers for best performance.
PROOF Research carbon fiber barrels are up to 64% lighter than traditional barrels, providing significant weight savings without compromising strength or durability.
These barrels maintain match-grade accuracy and have improved heat dissipation, which leads to cooler operation and longer barrel life without point-of-impact shifts during rapid firing.
The 18-inch, 1-8 twist carbon fiber Sendero barrel is designed for .264 caliber rounds and combines reduced harmonic vibration with a tough, weather-resistant surface.
Faxon Firearms' 9mm AR-15 barrels are made from 4150 GBQ Steel and have a 1/10 twist rate for stabilizing various 9mm loadings.
The barrels come with a durable QPQ Black Nitride or FDE coating for enhanced corrosion resistance and longevity, and are threaded for suppressor use with a ½” x 28 thread.
All barrels undergo magnetic particle inspection to ensure quality, and it's important to match the proper diameter muzzle device with the 1/2-28 threads.
Criterion Hybrid .308 AR barrels are match grade, offering high accuracy with a lighter Hybrid contour and are suitable for .308 Winchester or 7.62x51 ammo.
Features include M118LR chamber for improved long-range performance, compatibility with DPMS pattern rifles, and a barrel extension already installed.
Available in stainless steel, these barrels come in 20" length with a 0.750" gas block, are button rifled, hand lapped, and have 5/8x24 muzzle threads.
The Criterion Barrels .223 Wylde AR-15 barrel combines the advantages of 5.56 NATO and .223 Rem, offering the ability to shoot both types of ammunition with improved accuracy and performance.
Constructed with a salt-bath nitride finish, this barrel provides increased surface hardness, corrosion resistance, and an extended service life.
Available in mid-length or rifle-length gas systems, the barrel features a Hybrid contour, a threaded muzzle (1/2-28 TPI), and comes in a sleek all-black finish.
The Brownell's Retro A1 16" carbine length barrel assembly is chambered in 5.56x45mm NATO, with a 1-7" twist, and is chrome lined and finished in black phosphate.
It features a front-sight base, sling swivel, and Delta ring assembly, and is machined from 4150 chrome moly steel.
The barrel assembly is designed for AR-15 builds and includes a carbine length gas system with ½"-28 muzzle threads.
This .308 chambered barrel is made from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and is suitable for DPMS style AR-15 rifles.
The barrel has a mid-length gas system, a .750" gas block journal, and a 1:10 twist rate, with a 5/8x24 threaded muzzle for attachments.
It is important to comply with all NFA/ATF rules when using this barrel, as it requires a Registered SBR, Machine Gun, or Pistol lower receiver.
The barrel is crafted from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and a Nickel Boron Coated Extended M4 Feed Ramp Extension.
It features a BA Hanson profile, includes a pinned lo-pro gas block, and is not compatible with aftermarket piston kits.
Compliance with NFA/ATF rules is required, and the barrel is suitable for use with Registered SBRs, Machine Guns, or Pistols only.
The barrel features a 223 Wylde chamber, accommodating both .223 and 5.56 NATO ammo, with a 1-8" twist rate for improved accuracy.
It includes a chrome-lined bore for uniformity, hand-lapping for smoothness, and is designed with optimized gas ports for reliable cycling.
Available in 16", 18", and 20" lengths with Hybrid or HBAR contours, the barrel supports various gas systems and is finished with parkerized 4150 Chrome Moly Steel.
Faxon Firearms has collaborated with Q to produce barrels for the new 8.6 Blackout round, featuring a rapid 1:3 twist rate for enhanced on-target energy.
These barrels are made from 4150 CMV steel and undergo rigorous testing including stress-relief, air-gauge, and Magnetic Particle Inspection to ensure top-notch accuracy.
The 8.6 Blackout barrels by Faxon come with a Lifetime Guarantee, although the 8.6 BLK round is not yet SAAMI certified, necessitating caution with firing and reloads.