Description:
Will fit ARES AWS338 / MS338 Spring Sniper Rifle. Also Can fit with Marui VSR-10.
This package is included:
Vaccum Piston / 9mm Spring Guide / Precision Cylinder / Taper Cylinder Head
Vaccum Piston can solve negative pressure and make straight shot. VC needs a time lag to air tight than HD Piston. That different is little lower FPS.
