SIG AIR P320 M17 / M18 Orginal Frame (# 03-1)

SIG AIR P320 M17 / M18 Orginal Frame (# 03-1) Polymer Construction Design For Replace the Original Parts With 20mm Picatinny Accessory Rail on the Bottom Suitable For SIG AIR P320 M17/ M18 Series Airsoft Gas Blow Back Gas GBB Pistol Airsoft Gus