INFINITY CUSTOM
DROP IN UPGRADE FOR DOUBLE BELL VSR-10 !!
*45 DEGREES PISTON
*STEEL ZERO RESIST SPRING GUIDE ROD-A MUST PAIR UPGRADE TO ACHIEVE ZERO RESIST FUNCTION.
*STEEL ZERO RESIST GUIDE ROD STOPPER-A MUST UPGRADE TO PREVENT DEFORMATION OF GUIDE ROD DUE TO HIGH FPS SET UP.
**BEST PAIR WITH INFINITY CUSTOM 45 DEG STEEL SEAR SET AND M180 SPRING