Great product - Aero Precision M5 18in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS R-ONE Handguard

First AR 10? Look no further! This upper is just what you need to finish the job. Does require a bolt carrier group and charging handle, but once that is installed, and pinned to the lower, you’re off to the range! Great piece for long range shooting, hunting, DMR builds. I am very happy with Aero Precision and will be using their parts for future builds.