Identification of detonator pins (UZI?).

I found two unlabeled detonator pins among my spare parts. They are most likely for Marushin UZI, but I am puzzled why two different sizes.

Black: 28mm (total length), 4.5mm (tip diameter), 10.3mm (base diameter).
Silver: 22.2mm (total length), 10mm (base diameter).

Top photo , lower one is proper Marushin Uzi one , the other looks custom made for uzi to use another cartridge ( possibly MGC type )

DOC

Thanks, that makes sense!

I found that Cerwyn has a similar bare metal detonator pin (second photo from top), so he might be able to confirm which cartridge he uses :-) Probably MGC Sig P220, the usual suspect.
http://mp40modelguns.forumotion.net/marushin-uzi-modelgun-f23/marushin-uzi-basic-parts-inspection-guide-t1207.htm

smootik wrote:

Thanks, that makes sense!

I found that Cerwyn has a similar bare metal detonator pin (second photo from top), so he might be able to confirm which cartridge he uses :-) Probably MGC Sig P220, the usual suspect.
[url=http://mp40modelguns.forumotion.net/marushin-uzi-modelgun-f23/marushin-uzi-basic-parts-inspection-guide-t1207.htm

http://mp40modelguns.forumotion.net/marushin-uzi-modelgun-f23/marushin-uzi-basic-parts-inspection-guide-t1207.htm[/quote[/url]]

Yes indeed, the shorter pin converts Marushin's UZI to fire MGC P220 cartridges. No other mods are required