Madbull Madbull Upgraded Black Python 363mm 6.03mm Inner Barrel for Metal Gearbox Airsoft AEG ( M4A1/SR16 )

Madbull Black Python 363mm Tight Bore Barrel - M4A1 / SR16 Black Python is our experimental product. By using hard coating process, our barrel can provide the smoothest inner barrel surface and reinforced structure. NOTE: The choice of B.B. will be very important. We will only ensure our barrel is 6.03mm diameter.