Exciting to see someone taking this project up. Looks like youve got a great starting point with the barrelXchange parts. This is on my project list too. Like you Im hesitant to sacrifice one of my H&R magazines. Ive considered the pro mag 45 Uzi mags and a sleeve from DougStump. That way you get a Uzi drum and a Reising drum and you save big time on the initial magazine costs.
Please share your progress!
Troy did a good job on the drums. Very interesting ideas to turn a 9mm to a 45ACP. One may think to just throw a tower on the drum, but there are minute details.
I did get a stl file for the Uzi magazine, but haven't tried printing it out only because I don't have a Uzi magazine to use it on. Been meaning to buy one.
I had one of Troy's drums, it worked well, I wouldn't want to try to build my own though. But yes I'd use the factory 12 round mag as opposed to one of the worthless Keystone mags.
The Keystone I have is the latest generation of the Reising 50 magazines that I ordered mid '20. I received beginning of the year. (it was their presale). I'm going to take it out probably this weekend and try it out. If it feeds fine then I'll do the Keystone. Otherwise I'll do the H&R. Only issue I see with the Keystone magazine is the last round. The follower is too far over where the bolt will hit it on the front half of the follower's side so after the last shot is fired, it either will force the follower slightly down, gouge the follower until it doesn't present resistance, or bolt gets stuck partially open. I plan to probably either file down the side of the follower or modify it to not fully go all the way up (enough to allow contact to the last round, but not enough to have the bolt hit) or I might 3D print my own follower..
Nevertheless, I'm very optimistic about the Keystone... I plan to post about it when I get a chance to fire them.
I was debating using the Keystone for the build but it fits perfectly in my Reising. I think they may have improved the feedlips fit. Note that I bought a Christie magazine and it didn't even fit my Reising so I sold it off! (All the H&R magazines I have couple of 20rd, many 13rd all fit perfectly)
Talking with Troy, he was using Christie magazines on his builds but I suppose it depended on what magazine he was sent.
Edited by Ryo, 30 March 2021 - 03:45 PM.