Madbull Black Python Ver. II 6.03mm Tight Bore Barrel (407mm - M4 / SR16)

Madbull Black Python Ver. II 6.03mm Tight Bore Barrel (407mm - M4 / SR16) Precision Barrel for M4 / SR16 Series Airsoft Electric Gun AEG Rifle By using a hard coating process, MadBull Black Python barrels can provide the smoothest inner barrel surface and a reinforced structure High grade precision barrel at 6.03mm diameter for extra power and accurate shooting What is difference between Ver 1 and Ver 2? Based on the feedback from users, MAGBULL did a lot of improvements on the new Version 2 Black Python Tight Bore Series - being made with a new machine and new coating process. - using different packing (10pcs packing) to prevent "bending" during the shipment.