Category: HYDRA

Covers HYDRA drop-in kits for AEGs with offset nozzles.

Nozzle Measurement

If you can’t find a nozzle specific to your replica, you can determine the correct nozzle by measuring the two distances indicated below and adding them together. Then choose a nozzle from the list that is 0 to 0.5mm longer than your measurement.

Original Engine

With your original engine and nozzle still in the gearbox, measure the distance the nozzle extends from the front of the gearbox.

Wolverine Engine

With your Wolverine Airsoft engine in the gearbox, measure the distance from the front of the engine to the front of the gearbox and add it to your first measurement.
NozzleLength(mm)
CA LMG17.75
M24918.75
M419.25
AK19.65
KA FAL21.5
G3624.5
CA SCAR L25.75
PTS Masada27.5
VFC XCR29
A&K Masada33.32
GG SR2535.05
VFC SCAR H36
KA SIG 55647.4

Note: A&K SR25 and FAL nozzles are interchangeable. If you need a Gen 1 nozzle, select FAL. If you need a Gen 2 nozzle, select A&K SR25.

General Engine Maintenance

Regular maintenance on an HPA engine should be performed every 25-50k rounds depending on the conditions it is being used in. The dustier and dirtier the conditions, the more frequently it should be serviced. Maintaining the INFERNO requires disassembling the engine and lubricating/cleaning/replacing the O-Rings.

For detailed instructions, please see the Owner’s Manual for your engine.

For detailed instructions on the solenoid, please see the Solenoid Maintenance Guide.