I've used a bunch, and help my friends build theirs with PSA lpks. Done 5+ builds with them. 2 issues
No fault of the lpk, Magpul Miad has an out of spec depth for the spring on the safety selector. Had to use a filler to effective extend the spring to provide enought tention.
One lpk was missing a couple peices. Call up PSA and they send them free, had it in my grubby hands in 4 days.
PSA has state all parts are made in the usa. They've said they use FN's supplier. They're GTG.
Assumption is the mother of all ****ups.
Know what you know, Know what you don't know. -Paul Pedzolt
"Jack of all trades, master of none, though oftentimes better than master of one" -Mynshul