Hi, thanks to this adapter you can mount : M4 1200RD ELECTRIC DRUM MAGAZINE or any other M4 mag !!! :)
To secure the upper part I used a spring from a lighter.
Flat printing recommended!
Infill 30% or over.
I printed the main part flat with tree supports .
I am using the Ender 3 printer but it is not on the printer list of this website
Because I do not have closed chamber I was printed all PLA
The obj. files are the same as stl.
Please check Your UMP45 version.
Compare your magazine input with photo no.3
Magazines (new?, Im not sure) of the G&G Version are wider and I dont have file for it.Im sorry
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UMP adapter to M4 mag
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