The [b]SIG MCX[/b] is a family of selective fire [[gun|firearms]] designed and manufactured by [[SIG Sauer]]. The civilian legal models are available in semi-auto only. SIG designed the upper receiver to be compatible with standard [[AR-15]] and [[M16]] lower receivers with the help of an adapter.

This tag applies to all the prominent variants, such the original SIG MCX [[assault rifle]], the second generation SIG MCX Virtus, the short-barrelled SIG MCX Rattler, and the multi-caliber SIG MCX Spear (that can be 7.62mm NATO [[battle rifle]]).

h1. See also
* [[List of Weapons]]
* [[SIG MCX (Girls' Frontline)]]
* [[SIG MPX]]

h1. External links
* Wikipedia: "SIG MCX":https://en.wikipedia.org/wiki/SIG_MCX
MCX XM7