[HKAKS]

Out of curiosity...
Which caliber lower did you use for your UMP Conversion.
Add whether or not you are having issues. I'm pretty sure that there is no dimensional differences

 

[Daniel333]

9 40 and 45 all use the same lower

 

[HKAKS]

Mine's marked 9mm I'm just curious how others are marked...and I guess why they're labeled with different calibers
C

 

[Daniel333]

thats interesting. can you post a picture? i never seen a UMP lower caliber marked

 

[Boondock Saint]

I'm curious as well. I shoot mostly 9mm now.

 

[HKAKS]

I'll get a pic asap...I'm in Colorado and I bought it in a rush at a premium-ish price before the mag cap ban took hold here.

 

[HKAKS]

I guess I could've waited...in retrospect

 

[HKAKS]

http://s566.photobucket.com/user/hkaks/media/IMG_0165.jpg.html?filters[user]=90130698&filters[recent]=1&sort=1&o=0

 

[Chopstix Kid]

In Germany, many parts (such are lowers) are required to to be serialized so many of those parts get a caliber designation. There is no actual difference in the lowers themselves.