80% lower Question

[Irving]

I was going to ask about just drilling larger and installing bushings from the get go.

[jkoby27]

I was going to ask about just drilling larger and installing bushings from the get go.

I would probably do that as a last resort only if the holes really did get wallowed out. My buddy who is the one who helped get me into guns and also convinced me to try building my own has an ar15 built with an 80 lower and he has owned it for almost 2 years now and has had zero issues. His lower is 7075 aluminum not 6061. The lower is also raw unfinished aluminum. 6061 doesn't provide the same high strenght and stress resistance as 7075 I've been told. Maybe the 6061 lower holes are more likely to wallow out if unfinished.