Madbull Precision Inner Barrel 6.03mm Aluminum Black Python Ver.2 (363mm)

Madbull Precision Inner Barrel 6.03mm Aluminum Black Python Ver.2 (363mm) 6.03 precision inner barrels Increased precision Upgrade inner barrel Highest quality Strength and durability Suitable For Tokyo Marui M4, SR16 and SG551 Airsoft Rifle Enhance performance by at least 15% comparing to the stock barrel