This raises accuracy and zero repeatability for the duration of disassembly and reassembly when accomplishing upkeep. Installation was easy and straightforward, exceptional design. Only had to use one particular shim to receive it at 11’oclock, superb in shape and small if no hole. Soon after about six months or so https://knightsarmamentrail63951.weblogco.com/26610768/getting-my-knights-armament-m4-quad-rail-to-work