Madbull Ultimate Ball Bearing Spring Guide Ver. III

CNC Aluminum (Lightweight) Construction

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.

Ball Bearings for reduce the stress inside your airsoft gearbox

As a spring decompresses, the bearings allow full twisting, adding improved rounds-per-second and maximum power.