Nine Ball Spring Guide Pro for Marui Model 17/ 17 Custom/ 18C GBB

Nine Ball Spring Guide Pro for Marui Model 17/ 17 Custom/ 18C GBB Steel Construction (Teflon Surface) The tensile strength of the springs and the materials all help to absorb momentum to ensure as smooth an impact as possible to increase reliability and consistency of the recoiling mechanism. Allows the selection for three levels of recoil stroke length by removing / adding buffers to tweak the firing cycle length / timing to your liking Suitable For Tokyo Marui Model 17/17 Custom/18C GBB Pistol Airsoft Guns