Angry Gun MUR-1S upper kit For PTW Outer Barrel The reason being is that

The reason being is that the long contact patch nub inside doesn't readjust itself to fit the BB's profile as it gets squeezed through the bucking

The weapon was originally intended to have used any one of four cartridges: 5

Hunting & Military Purpose Use

SKU GP367 Item Weight (gram) 170 Major Color Black Loading Capacity 150 Rounds Magazine suitable for AK Series of Tokyo Marui Airsoft AEG Magazine Type Standard Bullet Type 6mm BB Manufacturer G&P

Angry Gun MUR-1S upper kit For PTW Outer Barrel The reason being is thatAngry Gun MUR 1S upper kit WE Version, PTW Version Made by CNC Material: 6061 Specific Dark White Laser Marking