Prometheus NGRS (Next Gen Recoil Shock) EG Spring Guide for M4
The Prometheus Spring guide for NGRS M4’s is a strengthened replacement part for the Tokyo Marui M4 NGRS system. The spring guide is made of multiple materials including metal and polymer. The spring guide is a good idea for anyone trying to upgrade an NGRS M4 system and put a stronger spring system in it that needs some reinforcement.
- Metal and polymer build
Material Polymer, Metal
System Tokyo Marui NGRS M4’s