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 Closing the valve sooner can allow for higher efficiency, more shots per fill, and a lower extreme spread in velocities per fill.

 

* If purchasing for a gen 1 Marauder rifle, you will also need to add the hill airgun high flow valve cap to your order: https://hillairgun.com/products/hill-blue-valve-cap/

 

 

Includes:  1- hill 59 valve spring, paypal fees, and free fast shipping within in the USA

Price: $8.98