Canna di Precisione 6.03mm Ultimate Precision Inner Barrel Set For GBB (370 mm) 14.5″ AR /M4 /HK416 GBB /370mm Unicorn

GBB HOP-UP SPEC.
Comes with a GBB HOP-UP Bucking (60 degree).

Corresponding reference :
Compatible with 14.5″ barrel length setting (AR, M4, M723, HK416, SR-16).
Compatible with Tokyo MARUI MWS, VFC, WE GBBs.
Compatible with GHK M4 GBB series after 2022 (with new GBB HOP-UP set).
Still compatible with other AIRSOFT model which with GBB HOP-UP SPEC.

● Product Brand : UNICORN AIRSOFT (Taiwan)
● Material : Copper, Rubber
● For GBB