Unicorn GBB 300mm 6.03mm Inner Barrel

**Please note that the manufacturer, Unicorn, no longer provides a hop-up bucking with their inner barrels due to increased material/production costs. All Unicorn inner barrels will ONLY include the inner barrel. Buckings sold separately.**

UNICORN Nitroflon Coating 6.03MM Ultimate Precision Inner Barrel For GBB

Common size for:

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

outer: 8.55MM

inner: 6.03MM

material: Brass electroplating nitroflon coating