unknown Stickpin with SMG!!

[Thälmannpionier]

found this interesting and pretty heavy Stickpin and have no clue where to start researching it.

It has a twisted needle..shows a german or maybe austrian SMG
also some other symbols all around..hope someone can help

TIA
Andreas

[Thälmannpionier]

u

[Thälmannpionier]

different angel

[Wood]

Czech or Slovakian expert machine-gunner, I've never seen a stickpin one of these before.
Pete