Description:
The Inner Barrel From Japan PDI Factory
The Inner Barrel for Tokyo Marui M4A1 MWS / M4A1 Carbine / M4 CQBR / Type89 / MTR Gas Blow Back Rifle
Inner Diameter: 6.01mm
Outer Diameter: 8.55mm
Material: Stainless Steel (SU304)
Tolerance: +/- 0.002mm