Idk if it’s “aac”, I thought those were only 308s, but I have a 16” rem tactical that looks exactly like it with the green hogue, coged thread protector etc. It’s a 1-9 twist, was good up to 69 grains. Shoots 1/2-3-4 with handloads. That said I stripped the stock and trigger off of it and all that right away and yesterday I stripped the barrel off. I got it a couple years ago for 550 and I’ve been pleased with it.