Receiver misdrilled from factory

[shovelheadave]

Have you put some putty in the lug area to see if the new lug is hitting something?

I had this issue before I took the factory barrel off, I thought it was the Duramaxx that was off.

I was thinking that the new lug might be binding it up, it's not.

Putting the factory lug back on and putting it back in the original tupperware. If you turn it over you can see that the back action screw lines up but the front screw is off.