G&P CNC Metal Blowback Housing For SIG Sauer M17 GBB Airsoft Gun (Gray)

G&P CNC Metal Blowback Housing For SIG Sauer M17 GBB Airsoft Gun (Gray) CNC Metal Construction Airsoft Blowback Housing Able to adds extra Stability and FPS Power performance to your Pistol Suitable For SIG Sauer M17 Gas Blow Back GBB Airsoft Pistol