Any thoughts on this Syracuse, NY Remington Rand M1911A1. It has a stippled grip and flat (not arched) backstop. Trigger is not standard 1911 A1 Army issue and is set very light. Could have belonged to an AMU armorer who set it up as a special order for a marksmanship unit or an AMU. I haven't been able to find the serial number 8666666 or the AU stamp. I'm no pistol expert and a lot of what I explained came from a gun enthusiast buddy of mine. Thanks!