Madbull Black Python Version II 6.03mm Tight Bore Barrel 
Suitable for UTG, TYPE-96, APS-2 Series Airsoft Rifle 
This is the Mad Bull 6.03 mm Tight Bore Barrel with a length of 499mm. This tight bore barrel is a quick and easy upgrade to get you more power and greater accuracy. 
The barrel is set at 6.03mm, as opposed to the stock barrel set at 6.04mm. 
You can enhance your performance by at least 15% by upgrading from the stock barrel! You will get less air leakage around the BB and a tighter grouping of shots. 
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.