Description:
Non Bore up cylinders are designed to replace the inefficient stock cylinder in order to take full advantage of the spring's power. By reducing the amount of escaping air it effectively increases the amount of air propelling the BB, which in some cases can mean more FPS. Systema is and always has been a leader in airsoft engineering, and their upgrade parts, like this cylinder, is an excellent upgrade from a stock component.

Specifications:
Manufacturer: Systema
Design: MK5, AK74U