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: Mid-Length
• Exterior Diameter at Gas Port: 0.750″

@25