Madbull Upgraded Cylinder Set - Standard Version for SIG550 Net-Weight-(g)_1122 History of HK416 A5

History of HK416 A5

315mm Outer Barrel (Short) - Shorter than original 55mm

Suitable for KJ Works M4A1 Series Airsoft Gas Blow Back GBB Rifle (Tanio Koba)

Widely used by Imperial England Army during World War II

Madbull Upgraded Cylinder Set - Standard Version for SIG550 Net-Weight-(g)_1122 History of HK416 A5The 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