Nasty fitment - Wilson Combat Upper Receiver

This Stripped Upper has TERRIBLE Tolerances. It rattles around like a Marble in a Spray Can. I would say “Different Manufactures” but it’s going on A WILSON COMBAT LOWER! Even with an AccuWedge, it has MORE Slop than the same Lower with an Daniel, Colt, Larue or LWRC have with NOTHING!
2 Stars because it does actually Secure to the Upper… I’ll give them that.