Kross Airsoft Design Tokyo Marui Inlet Valve

Inlet valves on TM GBB mags are consumables — they take a hit every time you fill the mag with green gas, and after enough cycles they start to leak. You'll know yours has gone when fill becomes inconsistent or you hear a hiss after fill. KAD's Tokyo Marui Inlet Valve is the replacement that brings the mag back to silent, full fills.

Direct replacement for the factory part, fits all standard TM GBB magazines (pistol and rifle platforms). Workshop-level swap — strip the magazine baseplate, remove the old valve, fit the new one, refit the baseplate. Allow 5–10 minutes per mag if you're new to GBB internals.

Replace before total failure

A slowly leaking inlet valve doesn't fail catastrophically — it just slowly costs you gas and shooting time, fill after fill. By the time you've decided it's bad enough to replace, you've usually wasted half a can of green gas on partial fills. The valve itself is cheap. Replace early and save the gas.