FPS Softair Ball Bearing Spring Guide for V2 Gearbox

Standard guides do not feature ball bearings, and these are included in this product because they reduce stress on the spring by letting it rotate freely. When upgrading your gearbox bearing spring guides should always be considered because they will improve the life-span of a spring by reducing sideways stresses. The spring bearing is construction from tough but lightweight aluminium Ergal with a smooth anodised finish. Fits version 2 gearboxes in replicas models such as M4, M16, SR16, SMG-3, MC51, G3, MINIMI, LR300.