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

Arrived promptly in oversized box that had no indication of what was inside ( I like that). Fit perfectly, fit and finish looks good all around, no loose parts or wiggle anywhere. Rails match up perfectly with the receiver. Barrel and flash suppressor look good.
Haven't put an optic on this build yet, so I haven't fired it yet.
Have and would recommend.