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1-year limited warranty
List Price $14.99 Save $2.00 (13%)
Air Arms S400 MPR / HFT 500 Low-Power Firing Valve
Replace your worn out firing valve for your S400 FAC, S410 FAC, S500 FAC and S510 FAC with this Air Arms firing valve assembly.
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What is a firing valve?
The firing valve is what opens and closes to control how much air is allowed into the transfer port and then down the barrel. It opens when the hammer strikes it. And closes with the help of a return spring to stop the flow of air during the shot cycle. The design and size of the firing valve is going to vary from gun to gun, this is for the Air Arms S4xx/5xx series rifles only.