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

Fit and finish are good. Accuracy is good. I’ve shot my 18 inch barrel out to 600 yards easily. The upper is pretty heavy, if you’re looking for a light weight upper, this ain’t it. My other complaint is how close the hand guard is to the barrel. Standard length m-lock screws contact the barrel and the QD hole for the front sling mount is unusable because the barrel is too close to the shroud to let the sling swivel go in far enough. Overall, it’s a decent upper but needs some fine tuning by the manufacturer.