1. Pusher591

    Breaking In Kriger AR15 Barrel

    FNG here. This is my first post here and its about a new upper I just purchased. I bought a 18'' SPR upper from Denny at Global Tactical. It has a Kriger 1.7:7 twist, with M4 feedramps, BCM BCG. Its mated to a RRA lower with a Giessle trigger and a 3.5-15 NF. I was wondering if any one on...