Sig's factory replacement M4 stock installs easily on your MCX/MPX via the receivers 1913 interface. This stock option gives you the ability to install standard AR-15 types buttstocks on your MCX/MPX.
NOTE: Magazine holder is removable but does not accommodate MPX magazines.
|Series||M4 Style Stock|
|Firearm Model||Sig MCX/MPX|
Determined at checkout.