Took the ACR to the range today and zeroed my XPS2....Rifle functioned flawlessly. Got the Eotech zeroed in 3 shots. Was getting quarter sized groups center of target at 75 yards (longest lane offered at the range I was at). I had a couple of buddies with me, and one of them is a new ACR owner as of today. I can't get enough of this rifle. I love it.