Product Overview
Upgrade your plastic spring guide with the FPS Ergal ball-bearing spring guide for the TM Next Gen M4/HK416 series.
Made from aerospace-grade aluminium and anodised for a smooth finish, this will withstand the increased load in upgraded builds.
The ball bearings on this model will reduce rotational tension on the spring when used in conjunction with a bearing piston head. The shape of the rim is compatible with most springs.
FPS parts are designed and manufactured in Italy.
