Guntec USA AR10 .308 Stripped Billet Upper Receiver AR-10
These are the very popular DPMS Gen I Low Profile Pattern upper receivers. DPMS made Gen I in high or low profile. Gen II (aka small frame) is a recent development by DPMS. The Gen II are not well embraced by third party manufacturers at this time and there are very few handguards and lowers available on the market for it.
GT-UPPER-308-RED Anodized Red FinishGT-UPPER-308 MIL-A-8625 TYPE III AnodizingGT-UPPER-308-FDE Cerakoted In Flat Dark Earth FinishGT-UPPER-308-R Raw, Unfinished