Unicorn 6.03mm precision barrel + hop chamber for HI-capa gas pistol

New PLUG & PLAY custom set with 6.03mm barrel installed.
ultimate aerodynamic technology performance.
Lower regulation steel screw with TDC arm and 60° hop bucking.
Pre-assembled items to install instead of original block
Guide rod pin and retain screw are included.
for MARUI, WE, AW Hi-capa and compatible gas pistols.
Barrel length: 113mm