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If you don't recommend aero precision then what upper would you recommend.
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like I said,
ALL my uppers are Aero, so I don't have any firsthand experience with any "generic" DPMS-style LR-308 uppers. I assemble my own Aero uppers with my choice of barrel, BCG, handguard, etc, to get exactly what I want.
but from looking at arfcom comments, posts, seems like PSA is decent ($750). But if you're looking for cheap, you might consider BCA, rear-charging ($550), unless you want a non-standardized side-charger. With BCA, you might have to fiddle with it a little bit, I mean, it's BCA. since you built your own lower, you ought to be able to handle it. no offense, please.
if you go with BCA, you might have to do some bore brushing, chamber brushing to clean it up, check the barrel bore for gas port drill flashing, etc. on the other hand, you might not need to, it's a crap shoot. but the basics are there. Well, actually, you should do that kind of inspection with anybody's upper, barrel that you buy. The couple of BCA barrels I've boughten have been fine, after initial "prep". I haven't really ever browsed the cheap 308 uppers market offerings.
ETA: or, you could get the Aero upper, and file-to-fit on the back end, hit it with some flat-black. it'd probably take about 30-60 minutes to get it "custom fitted".