Pinned and welded for a legal 16+" overall length. The low profile muzzle device allows the use of any gas block with a .750" inside diameter. The YHM barrel features a 5.56x45mm NATO chamber for full compatibility with surplus mil-spec ammunition or commercial .223 Remington ammunition. Constructed of 4150 chrome-moly vanadium steel and coated by Melonited for ultimate surface protection. The melonite coating provides a thinner surface than chrome-lining, so bore friction is reduced for better accuracy. In addition, melonite is harder than chrome-lining providing a longer wear life. This barrel features a permanently attached Low Profile Muzzle Brake (YHM-25-A) that brings the overall length of the barrel to a legal 16".
- Length: 14.5" Rifled Length (Overall Length with Muzzle Brake is 16")
- Weight: 19.28oz.
- Material: 4150 Chrome Moly Vanadium Steel
- Chamber: 5.56x45mm NATO
- M4 Feed Ramps: Yes
- Profile: M4
- Twist Rate: 1 in 7"
- Finish: Melonite QPQ
- Permanently attached Muzzle Brake
- Gas Port Location: Carbine
- Exterior Diameter at Gas Port: 0.750"