CNC aluminium strut that fills the space around the HopUp chamber. It holds the weaker front part of the gearbox and prevents breakage. If the gearbox is damaged, it holds it in place and allows play to continue. The improved design allows use on the most common AEG M4 brands such as AimTop, Matrix, Classic Army, Dboys, A&K, SRC, P&J, A.P.S, G&P. Not suitable for two piece hopup chambers. The MBlock is made of very lightweight but durable T6 aluminum with a nice metallic red finish. If you are installing this device into an AEG front line, you must run the line around the chamber and around this MBlock. In the video below you can see how to install the MBlock into the M4 with the front wiring. Installation is now much easier and faster.

Weight: 10g

Materials: Aluminum