>>7970815More pics.
>>7978247Probably requires a part kit for stuff like the return and ejection springs if nothing else. Not clear whether all those parts are self source-able or if it uses any custom parts. You could probably ask the creator on Facebook or Reddit.
Apparently it’s just beginning to go into limited beta testing with a half dozen or so individuals, so it will probably still be a while until the design is refined enough for public release.