Rocket Airsoft Aluminum Cylinder Head - Version 3 M4 and M16 Series Newly redesigned in March 2015

Newly redesigned in March 2015 to improve the original SHS model to prevent loosening

the PicoSSR 3 is the best solution

Nine Ball Main Spring Housing w/ Spike

the PDI Trigger Sear for Type 96 is a must buy for any Airsoft sniper looking upgrade their trigger box

Rocket Airsoft Aluminum Cylinder Head - Version 3 M4 and M16 Series Newly redesigned in March 2015This Rocket Airsoft Aluminum Cylinder Head is compatible with most Version 3 gear box shells. The double o ring design results in a superior air seal with the cylinder wall. (please note: packaging may be generic or labeled as 'Rocket Airsoft', but is made by SHS OEM, colors vary)