Precision/precision testing of this barrel was executed after a two hundred round crack-in period. All shooting was done from my bench-rest set-up subsequent my standard protocol. only one facts level, I picked up several salty used P&S M4 RAS's from Thoroughbred for $one hundred fifty ea. yeah, not KAC, but https://kac-m4-ras06285.blog2freedom.com/29535573/the-5-second-trick-for-ras-rail