Precision Barrel for PSG-1 Series Electric 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.