Unicorn GBB 300mm 6.03mm Inner Barrel

UNICORN Nitroflon Coating 6.03MM Ultimate Precision Inner Barrel For GBB

Common size for:

Tokyo Marui/WE/VFC M4 12″ all fit (M733 size)

length: 300MM

outer: 8.55MM

inner: 6.03MM

material: Brass electroplating nitroflon coating

includes: 60 degree GBB Unicorn hop up bucking