Ideal for a basic, high FPS or high Rate Of Fire as long as your chose the right spring rating for your Airsoft electronic gearbox build. Each spring is Zinc coated to deter corrosion without impairing performance. The front of the spring is also coloured to identify the power rating and which end goes into your piston upon assembly.

Features

Coloured end identifies power rating and which end goes into your piston (front)

Consistent power with minimum loss between each shot

Excellent coil strength

Closed and flattened top and end for improved stability

Designed with 6.03mm Inner barrels in mind

Progressive coils result in a smooth initial piston release limiting stress on internal components

Side bending is reduced due to materials and finish

Excellent for high rate of fire builds

Black Zinc plating to limit corrosion without impairing spring performance