If you are just wanting something to plink with and 2” groups are fine with you, the BCA may serve your purpose. I can’t speak to their AR10’s, but can their AR15 uppers. My very first one was a .223 Wylde from them almost 5 years ago now. It works, never had an issue with it, but many have. Mine only occasionally gets shot as I have 2 more in .223 Wylde or 5.56, along with a 6 ARC and 6.5 Grendel that get the bulk of my shooting.
Only the original one is a BCA, while it’s ok for plinking and having fun, it’s not going to win any accuracy contests. I’ve been able to get some 1” 5 shot groups with cheap 62 gr FMJ’s, but my hand-loads using 52 gr bullets at best is 1.4”.
As has already been mentioned, just build you one and use quality parts. You don’t have to get the most expensive parts to put together an accurate AR, but don’t skimp on cheap parts and expect 1/2” MOA either on a consistent basis.

Last edited by Hudge; 04/19/23.