Rocket Airsoft M4 Metal Hopup Chamber Set TM L96 AWS It's a little thicker (square)

It's a little thicker (square) than others

This is a 6

6v nun-chuck batteries as well as most stick and butterfly type lipos

Padded shoulder strap with sternum strap and D-ring

Echo1 M28 (CYLINDER NOT COMPATIBLE

Rocket Airsoft M4 Metal Hopup Chamber Set TM L96 AWS It's a little thicker (square)Rocket 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