The IBN method will allow the rail alone to act given that the barrel nut when torqued on to the rifle, entirely eradicating the necessity for just a separate steel barrel nut. M-LOK extras may be mounted anywhere together the URX 4?s length, which makes it one of the most https://kac-m4-ras07406.mybuzzblog.com/6207964/indicators-on-kac-m4-ras-you-should-know