Troubleshooting a new AR lower

[00tec]

Who ever owns the lower, needs to take another pass, or 2 on the bottom of the lower. It's not uncommon to experience this issue. Also depends on who the H/T/S came from. Personally, i'd take a little more off the bottom.

Yeppers.

The only issue I've ever had with an 80 is not milling out far enough. Centering or wall finish doesn't matter. If the floor isn't finished out, it will cause the tail of the trigger to hit the safety, even while it isn't set.

Take a caliper after it. You'll find that the floor is too thick, should be about the same as the wall