If it was me I'g go with the Rock River as well. I have a buddy with the Bushmaster Predator, and I can outshoot with my CAR A4 Rock River with any ammo I put in it. He also had to send his back to Bushy, as when he got it, it was a single shot.

In fact, I was out this evening checking crops, and I was busting jackrabbits out to 300 yards with my A4 no problem.