Well, for the price point you can't quibble much, right? The same product from TPM will cost you $1K more. But it's "buy once, cry once". The experience of finding out that my can won't mount up because the shroud is out of line with the barrel? Or a certain can won't work because of dimensional errors? I'll pay the extra for proven quality every time. And have, I just ordered one of the barreled SD uppers from TPM to be stashed away while I run the MP5SD I already have from them.
With Bailey you have to use the plural, "fiasco's". Speshul Weapons, Bobcat, etc. I'm not going anywhere near anything he's within 5 miles of when it comes to roller locked guns. If there's a weakness to the roller locked community it's an unwillingness (which I don't understand myself) to speak ill of people who produce products of varying degree's of reliability. Speaking freely and openly of such issues is in fact the corrective force needed to either drive them out of business, or force them to amend their ways, or make good on the occasional turkey they might produce if most of their stuff is OK. Sweeping problem children under the rug benefits only them.