MCX Stimulus Package 0.5

Please do not ask when mod authors will update their mods to 3.10 or if they can upload older versions of their mods.
Bothering mod authors will lead to warnings and repeat offenses will lead to eventual bans.

Lets you rechamber the MCX for 5.56x45mm ammo, among other things.

Gives the MCX a few more options to make it a little bit more of a viable option compared to its cohorts, the most important of which is multicaliber ability since that's the big ol' trend these days.


You can now rechamber the MCX for 5.56x45mm NATO/.223 Remington by swapping out the barrel, making it a low-recoil compact head-removal machine - and allowing you to save space in the inventory by buying one gun and two barrels instead of two whole guns in different calibers.


You can also add more stuff onto the MCX, namely, stock options formerly available only to its pint-sized sister, which gives you more options for tweaking that ergo score vs. recoil reduction tradeoff and makes it a bit more competitive with the Mk.47 Mutant for the title of "semiautomatic thorax remover extraordinaire."


Which is kind of nice.




Note that this is an early release of this mod. I have a lot more for this project actively in development, but between unforseen circumstances and personal anxieties I chose to put what I already had on the website as-is in case anything happens in the future to keep me from continuing my work. Of course, it shouldn't come to that, so unless something goes horribly wrong you can expect this mod to be updated with the following sometime soon:

  • 292mm (11.5") barrels in .300 AAC Blackout and .223 Remington.
  • 406mm (16") barrels in .300 AAC Blackout and .223 Remington.
  • Second-generation MCX Virtus, ported in from Modern Warfare 2019.
    • You can expect it to be a substantially stronger version of the MCX in exchange for a far higher price tag.



All assets shown here in this mod are repurposed vanilla assets. I own nothing. NOTHING!


Special thanks to Miralyn/LM4 for "borrowed" code and the boys over at KMC for obvious inspiration. And to you for reading this far down the mod page! Y'all are cool. :D

  • Version 0.5

    Early/"Basic" version of the mod.


    • SIG MCX is now able to accept 5.56x45mm ammunition via replacement of its barrel.
    • SIG MCX is now able to accept stocks intended for the SIG MPX.
    • SIG MPX is now able to accept stocks intended for the SIG MCX.
    • Special versions of the SRDTi suppressor and Taper-LOK adapter for 5.56x45mm barrels added.
    • Localization of SIG MCX and select parts adjusted to reflect changes made by mod.
  • Would love to see this make a comeback, I really dig the MCX and a patrol variant in 5.56 would rule.

  • Im dyin ova here without this mod 😭🙏🏽 I need my 5.56 MCX 😮‍💨

  • SOS.... SOS.... Calling Carl...... Updates desparately sought for your mods... WE'RE DYIN' OUT HERE!!!!

    ;(;(;(

  • does this conflict with MakesSense?

  • Can I put an angled sight on this yet? lol

  • Can you make this mod use with static offer?

    Currently this mod is not working when static offer is Enabled.