Madbull 6.01mm T6 7075 Aluminum Ultimate Tightbore Barrel 407mm Net-Weight-(g)_2676 which is around 3

which is around 3

High precision Red Dot Laser / IR-Illuminator / IR Marker

Wired to the stock with Small Tamiya connector)

Suitable For M4/ M16 Series Airsoft Rifle

Madbull 6.01mm T6 7075 Aluminum Ultimate Tightbore Barrel 407mm Net-Weight-(g)_2676 which is around 3Madbull 6. 01mm T6 7075 Aluminum Ultimate Tightbore Barrel (407mm) 7075 Aluminum Construction (even higher grade aluminum than most of real gun and aircraft manufacturers who utilize by 6061 Aluminum) Suitable for Airsoft Rifle This is the Mad Bull 6. 01 mm Tight Bore Barrel with a length of 407mm. This tight bore barrel is a quick and easy upgrade to get you more power and greater accuracy. The barrel is set at 6. 01mm, as opposed to the stock barrel