FPS

FPS ergal ball bearing spring guide for gear box MARUI M4 SRE next gen (GM4S).
Upgrade your plastic spring guide to the FPS ergal ball bearing spring guide for gear box MARUI M4 SRE next gen.
The shape of the rim makes it compatible with most of the spr

The 100 m/s FPS spring is calibrated in collaboration with Daniele Cimadoro of Terni Softair.

In the phase immediately following forming, the spring is stabilized in the oven at a temperature of 400 degrees centigrade for thirty minutes in order to opt

M4 MARUI SRE piston with carbon fiber reinforced technopolymer body and with all metal teeth (PM05CF)



Weight: 15.40 grams



100% MADE IN ITALY
100% COMPATIBLE MARUI

The FPS carbon fiber Reinforced AEG Tappet Plate tokyo marui next gen recoil shock (ASRECF) is constructed out of polymer and is designed to be attached to the air nozzle and sector gear.
This process controls the feeding of BBs from the magazine into th