08-31-2018, 01:11 AM
Your facing a couple possible issues, or both. Either the receiver face needs squared, or the barrel extension is oos. The easiest fix would be to swap the upper and barrel. The barrel of its the only problem you are facing, would have to be replaced with one that’s in spec. You could square the receiver face at home if you get the tool(there are 15 threads on this a quick search will find the info).
Nothing kills the incentive of men faster than a healthy sense of entitlement. Nothing kills entitlement faster than a healthy sense of achievement.