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UMP conversion NFA questions

3441 Views 25 Replies 12 Participants Last post by  DarkPhoenix
Filling out the form 1 for my UMP conversion. I'm gonna be Doing the graft conversion. What I the OAL you put and did you mark caliper as just 45 or did you list all 3 calipers?
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OAL does not have to be to the exact mm. Just not shorter than actual length. Heckler und Koch, Germany or what ever is stamped on your gun will be acceptable. I have one that says AL. and one that says VA. It is pretty much understood that if it is prefaced by HK it's point of origin ist das fatherland.
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