Since the Ghost Gunner CNC mill came into my house, 80% receivers have been in daily conversations. Not just limited to AR pattern rifles, the 80% movement has expanded well beyond to Glock and 1911 pattern handguns, among others.
In this video YouTube user “shooting tips and tricks” goes step-by-step through finishing a Polymer80 Glock pattern frame, specifically the PF940V2 (Glock 17). The entire process is completed with basic tools and takes under half an hour. That includes test firing and chatting about the process, showing how quick and easy such a project can be. Check it out!
https://www.youtube.com/watch?v=jEQ-u_v3PJA