Madbull 6.01mm Tight Bore Barrel - 363mm Type_Knocker Valve Can be mounted quickly and

Can be mounted quickly and easily to any 20mm rail system

Weighs in at a respectable 790g

Great kick and metal "clank" with every shot

Working safety and slide stop

These goggles have an even higher resistance to fogging up than even the X1000's

Madbull 6.01mm Tight Bore Barrel - 363mm Type_Knocker Valve Can be mounted quickly andA precision 6. 01mm inner barrel from Madbull. The Black Python is a tried and tested inner barrel. By using a hard anodized coating, the barrel provides the smoothest inner barrel surface possible and and overall reinforced structure. Its also complete with a great looking Titanium colour finish. Precision made in Hong Kong. Features a 6. 01mm inner diameter and total length of 363mm. Suitable for barrel lengths as found in the M4, SR16 and SG551.