08-03-2018, 09:01 PM
Took the grendel out in the back yard today, I chambered a round and took the mag out, fired the round and the rifle didn't lock back.( to be honest I dont know if an ar will lock back without a mag). I was a bit concerned, but I stuck the mag in and fired off 5 rounds as fast as I could pull the trigger. Everything functioned and cycled fine. The brass on the first shot ejected ar about the 3 position but follow up shots ejected about the 2 position. I'm guessing it's a little undergassed. The bolt not locking back doesn't concern me much, but I'm worried it may cause problems in the future (short stroking) on hunts. What direction do I turn the screw to adjust, in or out? Ammo used was hornady black. The recoil on this rifle is amusing at best, it can be compared to my magnum research 22 mag.