Rainier Arms Mountain Series Cold Hammer Forged Barrel 5.56mm NATO

Rainier Arms Mountain Series CHF Barrel 5.56mm Nato
Rainier Arms Mountain Series CHF Barrels are built to be of the highest quality, extremely durable and long service life. Cold Hammer Forging of barrels has been known to produce accurate and longest lasting rifle barrels obtainable. The process also creates a defect free bore and the most consistent chamber possible. Many have trusted CHF barrels to be part of their foundation when building their duty rifle.
Specs:

Barrel Material: Chrome Moly Vanadium Steel
Made of Mil Spec M249 Machine Gun barrel steel, with heavy M249 Chrome Lining, (appx. 2 times as thick as an M4 or M16)
Barrel Type: Cold Hammer Forged
Barrel Caliber: 5.56mm NATO Barrel
Barrel Length: 14.5 Mid Gas, 16 Mid Gas, or 18 Rifle Gas
Barrel Profile: Modified Mid Weight Government Profile or Government Profile (STD)
Twist Rate: 1:7
Muzzle Thread: 1/2x28 TPI (Threads Per Inch)
Diameter At Gas Block: .750
Bore: Chrome Lined
Chamber: 5.56mm NATO
Made in the USA

Weight:

14.5 MW - 1 lbs 8.4 oz
16 MW - 1 lbs 9.8 oz
16 - 1 lbs 11.4 oz
18 MW - 1 lbs 12.4 oz
18 -  1 lbs 13.1 oz