Sig Sauer MCX AR Stock Adapter Kit
$156.74
Upgrade your rifle with the Sig Sauer MCX Stock Adapter Kit, enabling installation of MCX folding stock assemblies for improved adaptability and maneuverability.
Out of stock
The Sig Sauer MCX Stock Adapter Kit gives you the ability to upgrade your rifle and install MCX folding stock assemblies (Note: This will not work with Collapsible stocks / braces).
CAUTION: Many States and localities regulate the use and/or possession of collapsible and folding stocks. Use or possession of this product in conjunction with certain other parts may be illegal in some jurisdictions. It is YOUR responsibility to insure your use of this product is in compliance with all Federal State and local laws and regulations.
| Weight | 0.205 lbs |
|---|---|
| Dimensions | 7.250 × 4.000 × 1.500 in |
| Manufacturer | Sig Sauer |
| Finish | Not specified |
| Weight | Not specified |
| Material | Not specified |
| Dimensions | Not specified |
| Compatible With | MCX folding stock assemblies |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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