You can now Pre-Order your own Sig Sauer MCX-SURG suppressed upper receiver kit. These are built-to-order and orders can NOT be cancelled. Once the order is placed we are not able to cancel it with Sig Sauer. Sig Sauer estimates a ship date to us of December 2023. This will have all of the parts needed to upgrade your Mil-Spec AR15 lower receiver, but you can also drop it onto your existing MCX lower receiver.
You won't be able to get a complete USSOCOM MCX Rifle so this will be your one-time chance to build one. SIG does not plan to release these in the future so if you want one, now is the time.