Designed well but qc is an issue - Jacob Grey Firearms Ultralight 5.56 Nato High Polished PVD Bolt Carrier Group (BCG)s

Purchased two of these BCGs. As someone stated in prior reviews the gas key bolts are not properly staked. Used on one of my .300 blackout Aero builds and the gas key blew up and pieces of if got jammed in upper receiver. Noticed that 2nd BCG I have is poorly staked as well. Made contact about a week ago to JG and Optics Planet to resolve but no one is getting back. I also bought JG upper. No issues with it yet. But I think quality control is an issue at JG. I would stay away for now until these issues get resolved. Cant believe this company positions themselves as aero precision level of arms manufacturing. This is clearly not evident because of my experience.