120% Recoil Spring For G17 Gen4 by Cowcow Tech.
-Increase the speed and recoil potential of your slide with a 120% spring
-Made from high-strength steel
-A hard coating prevents corrosion
-Improves cycling efficiency
-For Tokyo Marui (and compatible) Glock 17 Gen4
*Please note: installing parts / assemble /fitting airsoft guns will need intermediate knowledge. Please refer to your airsoft gunsmith for proper installation/fitting.