The Madbull Standard Cylinder Set has all the necessary parts to upgrade or replace the cylinder assembly in your gearbox. The Cylinder Set includes a cylinder head, air seal nozzle, Madbull Alien green PX piston, the cylinder, and a polycarbonate mushroom piston head w/ bearings. The Cylinder set is compatible with most major brands of AEG. Take your standard gearbox to the next level of performance with the Madbull upgraded cylinder set. It is a must have for a high quality build.

Madbull Upgraded Cylinder Set - Standard Version for SIG550
High volume air intake
Madbull Alien green full metal teeth piston
Mushroom Piston head
Light weight durable construction
Max compression

Package include:
Cylinder
PX02 Full Teeth Piston
Cylinder head
Nozzle
Mushroom Piston head
Bearings

NOTE:
For optimal use in MP5-A4/A5/SD5/SD6, G36C, AK-Beta, and Sig-552 versions please use .28 or .30 weight bb’s.