03-22-2018, 04:16 AM
brian y Wrote:nice, I have been using 80% lowers for all my builds
Wow. Yours are nice. Are you a machinist with a real mill? I'm using a Harbor Freight drill press and HF calipers.

I bought the jig with an 80% lower for $100 on Gunbroker. The trigger group seems to work fine.
I built a Polymer 80 lower last year. This is my first aluminum lower. I used the Polymer 80 endmill.
Now I need a new endmill.

