The Guarder Precision Tightbore Barrels for the KSC GBB M4 are polished brass barrels for increased velocity and accuracy in your KSC GBB rifle. The 6.02mm inner barrel diameter provides tighter seal for upgraded FPS.
The 500mm length 6.02mm tightbore fits the KSC GBB M4 with a barrel extension, or the KSC M16.
These inner barrels are specifically designed for the KSC GBB M4.
Guarder KSC GBB M4 Tightbore Barrel 500mm Features:
-6.02mm Inner Diameter
-Polished Brass Construction
-Fits KSC M16