Any chance of getting those nice MCX folding/Telescopic stocks :^ )))))
This??
1 in stock right now
https://www.westcoasthunting.ca/product/sig-sauer-x-collapsible-stock-for-mcxmpx-black/
No, that MPX 9mm PCC Buttstock that you linked to is far too short for rifle use. You would want the Retracting and Folding MCX Rifle Buttstock found on the SIG VIRTUS RIfle and Carbine. However I have since found that the Picatinny interface on the SIG Rifles is proprietary and the MCX Buttstock does not mount properly to the standard Picatinny Rail interface on the shiny new SAI R18 Mk2 rifle.