Got a 6.5 Grendel, 18 inch upper from them a while back. No issues, other than I had a bad 'gunshow' mag that wouldn't feed. Switched mags and it runs great. Not my most accurate AR, but inch and a quarter 5 shot groups with factory Hornady Black 123 ELD's, consistently at a hundred, can't be complained about when the complete upper was
Well under 300 bucks.
