I shoot my AR pistol like a rifle. I have a padded sleeve that slips over the buffer tube, and get a nice 3rd point of contact with my cheek weld. The recoil isn't so bad that you need the shoulder stock on a 5.56 pistol. It's heavy enough to absorb most of what little recoil there is. Yes, they are extremely loud. I had difficulty with iron sights at forst, then went with a red dot. Off hand standing, with a cheek weld, it's accurate enough, as one would expect from the 5.56 round. I'm not MOA at 100 yards, but at 50 (standing) I'm punching holes in the inside ring of a paper plate. I've not measured, but eyeballin' I'd say my AR pistol with 10.5" barrel is a good 4-5 MOA. If supported, I could expect to drop that down to a more reasonable 3 MOA at 100 yards, or less.