5KU Folding Style Stock for SIG Sauer MCX AEG / M1913 20mm Rail

5KU Folding Style Stock for SIG Sauer MCX AEG / M1913 20mm Rail Metal Construction Designed to be Compatible with Picatinny Rail Suitable For SIG Sauer MCX AEG Airsoft Guns Also Fit For SIG AIR MPX AEG Airsoft Rifle