Crazy Jet 370mm inner barrel for M4 and M249 Para GBB

Maple Leaf / Ra-Tech has developed an interesting new type of barrel for gas pistols and rifles.

The end of the barrel has a double wall that directs the higher pressure gas flow into the shape of the tube. It collects the higher pressure that builds up behind the BB as it passes down the barrel. This clever design creates a sort of "virtual" barrel that continues a few inches in front of the gun. This improves the gun's performance and, above all, accuracy. The focus is significantly better than with a conventional barrel.

The barrel is made of brass with anti-corrosion coating and has an internal diameter of 6.04 mm. The end cap is made of stainless steel.

The barrel is compatible with WE and VFC GBB guns.