I'm trying to put this lower together and I just realized this trigger guard is way off on alignment. I pulled out a different unfinished lower and noticed that the ear tabs are machined way differently to the one I'm trying to put in. I've never seen this before and I've done quite a few lower receivers.

Can this be fixed? Do I need a sleek type of trigger guard or something? Or does the receiver or guard need to be ground down?

I'm gonna be pissed if the lower is the issue. I had this one laser engraved with a custom serial number and my name.

Please help!

I’m getting ready to start my first AR9 80 percent lower. When cutting the above trigger slot it says 2in down off the jig plate. I 3d printed my plate and it measures .600 +/- .005. So I assume 1.4 inches is the pocket depth?

And the one next to it .630?

Thank you!

have anyone grabbed off them before