All my FALs were built in the late 90's/early 2000's and are all mil-spec surplus parts except for the odd furniture itams and 922R needs.They are out.
All newly made parts. Lowers, uppers, barrels, etc from the old Austrian machines they acquired to do so with .
I have not had any issues with DSA receivers as compared to my Imbel or Austrian. Though the metal is not as “quality” as the original builds for sure.
I got as-new parts kits back in the day when they came in-country. Still have a stash of odds & ends enough to build another but likely won't, since I sold 2 recently.