Wolverine INFERNO and HYDRA Nozzle Spring

The nozzle has to come forward to seal and go back to let the next BB up. The spring is what returns it, and because it does that on every single shot it accumulates cycles faster than almost anything else in the engine.

A tired return shows up as feeding that goes wrong under sustained fire rather than from cold — the first few shots are fine and then the nozzle stops keeping up with the rate. That is a frustrating fault to chase because everything looks correct on the bench.

This is the Wolverine item rather than a substitute of roughly the right length. In a part that sets nozzle timing, roughly right is not right.

Specifications

Good to know before you buy

Buy it with a service kit rather than alone. It is a consumable at a consumable price, and the sensible time to fit one is while the engine is already stripped for o-rings.

Fit the spring and inspect the nozzle together. If the nozzle itself is scored or the tip is worn, a fresh spring will not restore the seal on its own.

Frequently asked questions

Which engines does this suit?
The INFERNO and the HYDRA. Wolverine list it as one part across both.

How do I know the spring is the problem?
The classic sign is feeding that degrades as the rate of fire climbs while a slow string of shots behaves normally.

Is the nozzle included?
No, the spring only. Nozzles are platform-specific and listed separately.

Can I stretch the old one?
No. Stretching a fatigued spring changes its rate unpredictably and it will settle back worse than before.