Have a PSA standard mid length, a Phase 5 Tactical Enhanced (not full auto) BCG, and never once had a single problem with anything. have shot full auto with a slidefire multiple times and ran some tac drills at a high pace. Also the regular plink. Probably 2000 rounds through it. I can't for the life of me figure out why people would buy anything else for 700$. I hear DPMS, the M&P Sport, and Bushmaster carbons breaking all the time. I really don't get it. Why buy one of those? And I understand if Tula or Wolf doesn't run well in your own rifle, but people piss me off by saying don't use it in you rifle. Just because it didn't work in yours doesn't mean it wont work in mine. Just because it runs like a Ducati in mine doesn't mean you won't have problems. Shoot it and see. And for the record, the one and only FTF I've ever had in my rifle was Remington UMC BRASS. Go figure. I don't judge them on that one round though.