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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.

Installation review on APS-2 barrel: (Fit on most of China made sniper rifle, including APS-2, L96, MK96 and more...)

The version 2 ball bearing spring guide features a slightly thinner diameter shaft to accommodate springs of all sorts, making it more forgiving for both the spring and piston to compress. The spring guide's shaft is built-in with the top bearing plate to allow more rigidity and maximum spring decompression. As a spring decompresses, the bearings allow full twisting, adding improved rounds-per-second and maximum power.

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.

Black Python BP650 650mm Tight Bore Barrel