Have had this issue with a few builds. The recoil lug will sit just a few thousandths higher than the action and the scope mount will sit on it instead of the receiver. Most of the time, there's enough clearance to simply push the recoil lug down while tightening the barrel nut.

Installed a barrel last night that must have had a larger thread OD. There was no way to get the recoil lug lower than the action. Took the dremel to the forward end of the EGW mount and ground a little bevel so it would sit down against the action.

Any one else every notice this? Any other fixes?


Thanks,
Dana