The only problem that I've had with an M1A was the back of the operating rod popping out of its groove in the receiver. It did kind of stop things. Doubt it would happen with a receiver machined like a true M-14. But I don't shoot any of them much anymore.
Only owned 3. Sold one. Kept 2. A springfield and an Armscorp, both built up.
Never had an op rod pop out, but then ours were match guns and built very well.
