Mad Bull 363mm Black Python II 6.03 Tightbore Barrel - M4 / M4RIS / SIG551

Mad Bull 363mm Black Python II 6.03 Tightbore Barrel - M4 / M4RIS / SIG551

One of the most imoprtant parts of your AEG rifle is the barrel; 

quality is everything - it can be as tight (or large) a bore as you want,

 however if the quality is sub-standard then it won't make a lick of difference.

Madbull's version 2 black python barrels are a high quality affordable upgrade part - 

they are manufactured out of high grade aluminium, 

smoothened with German-made high precision gear hobs and anodized to ensure a smooth finish from end-to-end.

 Each barrel is tested before shipping, to ensure smooth finish,

correct diameter (via use of 6.02mm & 6.04mm rods; 6.02mm should fit, 

and 6.04mm should not) and to ensure that the barrel is straight.

The barrels are packed in hard plastic tubes, packed in sets of 10 (bubble wrapped),

 and sent in hard cardboard tubes to ensure no damage can occur to the barrel during transit.

These barrels work excellently with the Madbull hop up units and hop up rubbers.