UMP adapter to M4 mag


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.

Design Files

File Size

M4 Clippt.2.stl
40.8 KB
Adapter UMP to M4 part.2.stl
707 KB
M4 Clip pt1.stl
41.8 KB
part 2.stl
19.2 KB


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