The SB Tactical MPX PSB is a three-position adjustable pistol stabilizing brace designed to mate with the receiver cuts of SIG SAUER MPX and SIG MCX pistols. It ships as a complete assembly ready to install and includes an integral M1913 receiver saddle plus an adjustable nylon strap. Constructed from elastopolymer with steel hardware and finished in black, the brace provides multiple length settings for user preference and improved handling in practical use.
Key Specifications
- The brace fits SIG MPX and SIG MCX receivers.
- Length adjusts from 3.875 in (collapsed) to 6 in (mid) to 8.25 in (extended).
- The maximum width is 2.25 inches.
- The strap width is 1 inch.
- The listed weight is 19.1 oz.
- The finish/color is specified as Black.
- Primary materials are elasto-polymer and steel.
- The unit includes an integral M1913 receiver saddle and adjustable nylon strap.
- The brace is 3-position adjustable.
- Ships as a complete assembly ready to install.
With three-position adjustability, durable elastopolymer construction, and an integrated M1913 saddle, the MPX PSB provides a practical stabilizing interface for SIG MPX and MCX pistol builds. Its compact profile and included strap make installation straightforward while the adjustable overall length lets users tailor the fit to their handling preferences.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




