JBU 6.03mm Tightbore Inner Barrel 550mm For MIL16+ & UG+
6.03mm Precision Tightbore Length: 550mm Dia.: 6.03mm Fit to: MIL16+ & UG+ Series Compatible with AUG/FAL style AEGs
Tech Tip: Due the the high level of CNC machining in this barrel, only the highest quality BBs should be shot from it to prevent jams.
