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AR15.COM
3/7/2026 2:37:46 AM EDT
Guys, I need a machine shop local that will help with a USC to UMP conversion. I can do 95% of it myself but I don't have a way to mill the bolt that needs to be done. Does I spoke to Spartan and he is super awesome but is only doing bolt gun stuff. MCM never answered the phone or returned my emails. Anyone else? Actual machine shop gunsmith. Not a bubba shop...

Thanks in advance
3/14/2026 9:03:30 PM EDT
[#1]
Maybe call MidStar in Middleton, see if they have someone they recommend if they don't do it.

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