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

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. It'll stay accurate as the 6.03mm inner barrel and Hop Up rubber is included in the set up!