Well I got it to the range and put a little over 350 round thru it, both 5.56/.223, I discovered that it really likes the PMC .223 brass rounds. It was kinda picky with the 5.56mm independence ammo. Shot the Winchester 5.56 well also. I really enjoyed shooting it and this time I did not have to give it back, it's mine
I had just 2 failures to feed and it was with the magpul mag that came with the rifle, on both failures it was that same mag, I am not impressed with that magazine by Magpul. I also use Tapco Intrafuse mags and they worked flawlessly, I pick them up for 14.00-16.00 buck at my local sporting goods store. I think I might have bought them all..