while PSA has it's detractors, they're largely liked by their owners, and their warranty/CS is pretty solid, if needed, something that probably won't apply with this Gunbroker rifle. And PSA has their FN-barreled carbine upper on sale for $399. After a complete lower, add a decent BCG from Microbest or Toolcraft, and you've got a pretty respectable rig, quite reasonably.
The worst customer service experiences I have ever had as an industry professional have been with PSA. Their lack of decent customer service is the reason that we no longer stock their products in our shop.
If you buy an upper assembled by PSA for a good price out of good parts, then you have a good deal......as long as you can take it apart, and reassemble it properly. Their assembly "techniques" are amongst the worst I have ever see from an actual manufacturer.

