SHS Steel Springguide for Tokyo Marui M4 Next Gen

Features : 

• This Steel Spring Guide for Tokyo Marui M4 Next Generation replace the original Stock Spring Guide
• Stainless Steel Construction
• This spring guide with Ball Bearing is designed to minimize the load for the motor caused by the spring tension
• It also makes spring effectively spring back
• Backstop is specially equipped with EIGHT Ball Bearing to prevent Spring Tension build-up during Full Auto Shooting Mode. It greatly reduces the risk of spring breakage
• Recommended to use inline with Upgrade Spring