T-N.T. Studio APS-X Hop-Up System with Inner Barrel for GBB (75mm)

T-N.T. Studio APS-X Hop-Up System with Inner Barrel for GBB (75mm) Any GBB pistol should be reasonable when it comes to accuracy so a completely upgraded inner barrel and hop up by APS-X T-N.T APS-X Hop-Up System will actually helps push BBs past 60 metres, which is something that Marui guns always had issues with due to their low power Include High Precision 6.03mm inner barrel & Hop Up rubber