Main Springs for 300S

What you will receive:

2x Genuine Feinwerkbau Main Spring ( 1700.129.3 & 1709.129.3)

Now include part #1700.124.3 Slide ring (goes between the two springs)

Spring specs:

- 14 1/2 coils (each)

O.D. 20.25mm/.798 inch

I.D. 14.8mm / 0.582 inch

Lenght: 110mm / 4.334 inch (each)

Spring are coiled in opposite direction

Seals kit are available in my other listing.

*Please read
Will it fit the my 110, 150 or 300 Feinwerkbau rifle?
Anwser: No, not without springs modification. 
You see theses 3 rifles the 110, 150 and 300 have a the one piece mainspring design and the 300S as dual springs and wont work as-is in the 110,150 or 300 
It will at first, but the rifle won't cocked all the way to engage the cocking mechanism because the springs are taking too much space inside the rifle.
BUT if you are handy these dual spring can fit but cutting one just enough
I can help guide you through this procedure. Contact me.

To all my US customers!

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Sales taxes (were applicable) are collected by eBaY

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