Black Leaf Industries Black Line rifle barrels are sourced from and made in he United States of America, these barrels are made with 4150 Chrome Moly Steel and come finished in a Black Nitrate/Melonite finish.  All are threaded to 1/2 x 28 thread, cut in a SOCOM profile and take .750 Gas Blocks, with 1:7 button rifled twist and M4 feed ramps, barrels are chambered in 5.56 mm.

Barrels shoot great and are the perfect add to any build, will fit all BL15, and most AR15 style rifles.