Buddy chose his FAL (kit gun) and 12ga. shotgun.
FAL had naked barrel, a little bit of muzzle rise, not bad. Surprisingly, his 12ga. with 00 buck hit targets up to 50 yards away. I thought he was toast but the shotgun did the trick.
I did four rounds of shooting with an M4gery Bushy with mini-Y comp and iron sights. No muzzle rise at all on video, follow-up shots come very fast and since I engaged each bad-guy with 3 rounds, all three were pretty close together. Mag changes very efficient.
During one round of fire, I used a std. M1A. Much larger rifle to handle in woods. Surprisingly no muzzle rise even in rapid fire (again, 3 rounds fired at each target), confirmed by video. With targets using trees as supports/backstops, .308 chewed through quite a bit of wood. Mag changes more complicated than AR15. With an AR, you hit the button and mag falls out. Pop next mag in and slap the release-now you are ready to go. With the M1A, the mag needs to be physically removed from the magwell by pressing the lever and pulling the mag out. To "release" the bolt, you have to pull back on the charging lever, a bit less quick than just pressing a button.
While not nearly as poor a choice as I envisioned, the M1A, in terms of speed, cannot hold a candle to the AR.