AKA 100% Custom Recoil/Hammer Spring for Hi-Capa 5.1/4.3 Airsoft Pistol 
Steel Construction 
Design for upgrade your Original Recoil/ Hammer Spring 
Able to Increase the Recoil force 
Hammer Spring increase the hammer tension resulting higher gas output, i.e. more power fps 
Suit for 5.1/ 4.3 Series Airsoft Gas Blow back GBB Pistol
SKU    AKA-010-MH-BK
UPC    N/A
Item Weight (gram)    4
Major Color    Chrome
Manufacturer    AKA