No, he is looking for defensive use as well. I wouldn’t recommend it. BCA, if it was just for plinking or hunting. Now, counter argument is if he has a bear creek arsenal upper that works; not bad either. But if he was going to change out the nitride bolt supplied by bca; he might as well just went with the psa upper in the first place. BCA hasn’t been known for good quality control.
I have two bca uppers that I bought in the past I needed to send in to have the second one come back right. Both uppers for the first and also warranty return had handguard screws that were not even all the way screwed in; i needed to tighten them myself and then torque to 35 inch pounds.
The first one was 5.56 1:9 twist 16 inch barrel that I wanted just for hunting mountain jackrabbits and also a little plinking, it would scratch the round every time a new round was chambered. You can tell because if you wanted to unload, there was some tension in pulling the charging handle and there would be a scratch on the actual bullet. I sent that one in; the second one runs good but I don’t run it hard.
Second one was 16 inch 7.62x39 upper for wild pigs and also a little plinking. It was so hard to pull the charging handle back to unload where I needed to rip it back; I had once where my finger nail ripped. I sent that back, second one works; but the firing pin chipped after 40 rounds of steel case Tula. Replacements broke again. I ended up upgrading the firing pin to a black rifle arms which is rated for steel case.
So, both uppers work now. But I wouldn’t use any of those uppers for defense knowing that I had issues like that in the first place; however, it could also just be me thinking that since those uppers are dedicated hunting uppers. That’s just me. However, they do have a good price point.