All I can say is pure, true love. I fired 500 rounds of cheap 55 grain Monarque. Not a single flaw. Sighted it in with an eotech and a magnifier at 50 yards in five rounds. Cleanest zeroing I have ever had. The weapon feels extremely balanced, natural and truly built with body mechanics in mind. My Ruger 556 was my apex weapon of choice but the ACR was truly an experience. Worth every dime spent. I was so thrilled I let the guy next to me fire a few rounds and he was also shocked at how well the ACR felt when fired (I needed company in my delight). Look forward to Bushmaster putting out caliber conversion kits. For Bushmaster haters, I had an AR platform from BM and it too fired without flaw and never had any trouble with it. Gave it to my father for his B day since he gave me my first AR (colt SR1 series) back when I was in hgh school and I still own it to this very day. Will make it a SBR when barrels come out. Untill then I have a FN PS90 and a MSAR 556 I will convert. Now I digress. Great to be here.