THE ULTIMATE GUIDE TO KNIGHTS ARMAMENT SR-15 CQB 11.5 UPPER

The first step is to take a drilled barrel and hone the inside into a high-quality, thoroughly clean end. The barrel is then positioned on to a mandrel Together with the rifling sample floor in aid throughout it. This set up is then put among opposing energy hammers which literally hammer the barrel onto the pattern discovered to the mandrel.* Thes