A few weeks ago I built a custom P80 Glock 17. I used a hand drill and a dremel. All came out well accept for the cuts for the slide rail. I used the hand drill to cut them and it went off track. I was able to make it work but its not the best looking. I shot 50 rounds the first time with only 1 shell getting caught on the eject. The slide will release on its own when I load a magazine. I'm not sure if it still has more to go getting broke in or if it was the magpul 17rd magazines I have. OEM magazines may fix that problem. over all cost was around 630 with 3 mags. The slide is a Rock Slide Glock 17 that I got for 499 with all the parts (all the frame parts with it too). here are some pics and I hope you like it. BTW I'd do it again but i would take my time more.