[Milsurplus] OT: lube question german ZUSZ-40 zinc on zinc?

[jedifox]

hi all,
        i have a german ww2 ZUSZ-40 that is made out of german high 
grade zinc alloy , i need advice on how to unstick the moving parts.
i have a top down pic that you can look at attached to this request for 
assistance in unsticking the moving parts. if you want yo know what a 
ZUSZ-40 is just look it up with google.thank you for any assistance that 
you can provide.

highest regards
leigh
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