The HBAR barrel provides superior harmonics under rapid strings of fire. PBR AR15 barrels are produced in-house by PBR. Using our fully automated robotic-driven production line, we drill, ream, rifle, contour and assemble our barrels from raw bar stock to the finished product. These stainless steel barrels are corrosion-resistant and compatible with most AR-platform rifles. 0ur quality control system ensures they are dimensionally correct and bores fall well within their individual tolerance ensuring superior accuracy.