Originally Posted by Colorado14er
There are jigs available to guide you on the drilling. There is a fair amount of work to be done to complete the lower, but it can all be done on a drill press. CNC would be better for these, but not necessary. Without the jig, I wouldn't even try to complete one. Here is a site that carries the jigs. Jigs


I used one f those plastic jigs to drill some holes for a guy and was surprised at how well it was made.