This is a 5.56 NATO 16" contour barrel parkerized 1:7 twist AR15 barrel. The 5.56 NATO will shoot both 5.56mm and .223 ammunition. The process of making this barrel is very thorough it involves the barrel to be cut, rifled, and assembled entirely in the USA by one of the biggest barrel manufacturers in America. Each barrel is individually inspected 100% and air gauged to ensure it meets their stringent specifications.These Barrels are manufactured under the ISO-9002 Quality Systems and are manufactured from two types of steel:
  1. 4150 Gun Quality Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved.
  2. 416 Stainless Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved.
Ensuring to meet high expectations a Barrel 16 inch or longer, will hold a 1.000" MOA at 100 yards with appropriate ammo and shooting techniques. I have personally seen the accuracy of these barrels first hand when test firing. This barrel is threaded 1/2x28 using a Carbine Gas System and a .750 Gas Block. Look for our Gas Blocks and Gas Tubes under AR15 Upper Parts and make sure not to miss out on this quality barrel at a great price today!!

Check out this product on my website! http://www.battlecreekarmory.com/product-p/bcb55616cpc7.htm