Has anyone built an 80% SIG FCU from these folks? I have been working on one but can't seem to get the slide to connect on the rear portion of the FCU. Thanks
Hello, I'm new to this forum, but glad I found it. I am looking for some help with my first AR build. I have 2 80% lowers and a bench top drill press. However, I have been reading a few bad stories about using a drill press to finish the lowers. So I am looking for someone with a mill who...