Yeah, I hear, you.

Checked fit on most of the parts for the new build, MUR upper, Aero lower, nice & snug & I've used that combo before, SLR rail & AGB, Rise SS barrel & BCG, CMC trigger, Seekins safety, etc.

Got some Seeking rings I wanted to use, but think I will need a cantilever mount for the scope I'm likely going to use, so the rings will prolly get stowed. I'll use the rings on a smaller scope later.

MM