PTS MEC R-Type Piston Head for KWA HK45, MK23, MP9, Mark 4, VZ61

PTS MEC R-Type Piston Head for KWA HK45, MK23, MP9, Mark 4, VZ61 Metal Construction Design For Replace the Original Parts Also better suited to deal with the prolonged rigors of green gas usage Suitable for KWA HK45, MK23, MP9, Mark 4, VZ61 Series Airsoft Gas Blow Back GBB Pistol