Amazing upper - Matador Arms Mat9 9mm Luger 7.825inch Upper Receiver

This upper is a great product. I would recommend the product to anyone looking to build an ar-9 pistol or carbine. I've paired my mat-9 with a spikes tactical STG9 lower and Franklin armory binary trigger. The weapon also ran flawless with a silencerco omega 9k can. Two issues arose very fast though. The charging block broke in half and the bolt wouldn't go back far enough to be caught by the bolt catch. I called matador arms and Dave sent me a new improved charging block and a new thinner model buffer pad. Now my bolt catch/LRBHO works and I have a new charging block.