ID: 29519 (HU-MTX-RAWA)
Matrix 5KU Steel Hopup Air Seal Chamber for Western Arms Airsoft M4 Blowback Series
*Works for G&P, King Arms, A&K and other compatible M4 GBB rifles.
This new release will enable your Western Arms M4 blowback to be powered with standard gas here in the USA. Due to the regulations in Japan, Western Arms M4 blowback series are equipped with only a ABS hopup unit for the weak 134A gas they are only allowed to use in Japan. This hopup unit is a must have for all Western Arms blowback M4 owners. It will stabilize your air seal chamber and its a hundred times more durable and reinforced than the original hopup chamber with even better air seal. For experienced users recommended, consult an evike.com certified technician for assistance if necessary.
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"Finally! Problem solved! For those that are planning on using 134A gas for your western arms M4 blowback....i don't think you can find the gas and it shoots better with green gas anyways
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