CELCIUS Rapid Main Spring (CS300)
Steel Construction
Supreme Quality Airsoft Electric Gun Spring
You will get a stable muzzle velocity when install this spring
Design for Upgrade your AEG Rifle to increase Muzzle Velocity Power
Compatible with M4, M4 CQB, M16A2, M16A3 Training Weapon
Muzzle Velocity with 0,2g BB : 300-340 FPS
Product Size: Length 164mm / Diameter 12.17mm
