I'm not sure what model DPMS uppers I have, but there 16" stainless bull barrels stamped 223 1-9 on A3 uppers with float tube aluminum handguards, front sling swivel.
Both are very good shooters with the limited number of loads I've tried so far. RL-10 and 60 VMax's and RL-15 and 69 SMK's. I have'nt tried my little 30gr. Berger/4198 load in them yet.