Contact Us (626) 286-0360 Walk-In Superstore Daily Deal
Holiday Extended Phone Support Hours 7am-7pm PST
Browse by Type or Category
Happy Holidays! 20% OFF with coupon code: HOLIDAY20 (Exclude MAP and SALE Items)

Matrix 5KU Steel CNC Hopup Air Seal Chamber for Western Arms King Arms Airsoft M4 GBB Series

2 Customer Reviews

by Bin Q. on 07/11/2008
"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
by Nash G. on 08/08/2017
"THIS IS NOT A COMPLETE HOP-UP UNIT! DO NOT PURCHASE IT AS A REPLACEMENT UNLESS YOUR HOP-UP IS STILL IN WORKING CONDITION!

Now for the actual review, Overall build quality is very high, It IS indeed made on a Mill and lathe and the design is much better than the standard unit. However! They should write in the description that this is not a complete hop-up unit. It is only an upgraded housing for the components.

Build Quality is 5 out of 5
Description of product is 1 out of 5.

The bottom line is however, I would purchase it again.