Rocket Airsoft M4 Metal Hopup Chamber Set M4 and M16 Series Black design

Black design

With the large release/lock lever

Action Army VSR-10 M130 Spring

and build causes it to be an excellent value for those that desire an excellent vest which will endure and not look bad

This thing is insane

Rocket Airsoft M4 Metal Hopup Chamber Set M4 and M16 Series Black designRocket Airsoft Full M4 Metal Hopup Chamber Kit SHS TT0083 Comes with all the internal parts needed to operate (adjustment wheel, hopup arm, nub, etc.). CNC Easton 7075 Aluminum construction made. Surface treated for anti oxidation. Newly redesigned in March 2015 to improve the original SHS model to prevent loosening. Very durable and accurate in its bb feeding system. Replaces your original hop up chamber with an easy install. For use with any M4