Re: M1A entry level scope
I've heard complaints about the battle rail coming loose too... Not to mention losing the rear sight, having to run BUIS, added weight...
You'd be better off with a Sadlak Airborne mount. Very solid mounts when installed correctly.
I'd suggest the aforementioned SS 6X for hunting. Reality is, that may be a bit much for a close up shot too.
As for all the other stuff you mentioned; don't bother, just adding more variable issues. Spend the money on a Sadlak NM op rod spring guide and mag release. That's money well spent.