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MP44 downgrade spring

Skippy77

Skippy77

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Hello,

I've purchased a AGM MP44/STG44 and the fps of this is in the high 400fps. I have bought a M100 spring as I was told this could give me 320-330fps.

The thing is I'm not sure how to fit this.

Has anyone performed this replacement of this gun?

all suggestions welcomed.

Mike

 
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