The rail system on the socom II adds a lot of weight, something to consider comparing it to a socom 16. M1As are one of the most reliable 308 rifles. Consider that an M1A has something like 62 parts and an AR-10 has ~120 (these numbers are off the top of my head, but they're 1 or 2 off at most). An M1A is a simple, effective, reliable, battle tested rifle that will serve you well.