Madbull Airsoft Black Python 6.03mm Tigh Bore Barrel 285mm for MC51
Precision Barrel for MC51 Series Airsoft Electric Gun AEG Rifle
Version 2
Black Python is our experimental product. By using a hard coating process, our barrels can provide the smoothest inner barrel surface and a reinforced structure.
meant to enhance the performance by 15% when it comes to accuracy

What is difference between Ver 1 and Ver 2?
Based on the feedback from users, we did a lot of improvements on the new Ver 2's
Ver 2 is being made with a new machine and new coating process.
Ver 2 is using different packing (10pcs packing) to prevent "bending" during the shipment.