G&P Metal Front Kit For SIG Sauer M17 GBB (14mm CCW Thread)

G&P Metal Front Kit For SIG Sauer M17 GBB (14mm CCW Thread) Metal Construction 14mm CCW Thread Design For Your Pistol To Install Heavier Muzzle Device (Tracer/ Silencer - Not Included) Suitable For SIG Sauer M17 Gas Blow Back GBB Pistol