I was an owner of the rare R51. Accuracy was good. Reduced recoil meant +P ammo didn't tend to make the gun feel like it was trying to jump out of my hand. Reliability, was an issue. I exchanged for their R1 1911, which is a nice, tight, accurate pistol.
A bit of updated info on the R51 from a couple of Remington reps in my next post in another thread.