SB Tactical MPX PSB Pistol Stabilizing Brace 3-Position Black Elasto-Polymer for Sig MPX/MCX

The SB Tactical MPX PSB is a purpose-built pistol stabilizing brace designed specifically for the Sig Sauer MPX and Sig MCX pistol platforms (excluding the MCX Copperhead variant). The MPX PSB utilizes the factory integrated Picatinny rail slot at the rear of the MPX/MCX receiver, providing a clean, direct-mount solution that requires no separate adapter or buffer tube.

Constructed from durable black Elasto-Polymer, the brace measures 3.87" long by 2.25" wide and features a 3-position adjustable design with an overall length range of 3.87" to 8.25". The included nylon strap provides secure arm retention, allowing the user to stabilize the pistol against the forearm for improved one-handed control.

The MPX PSB is a factory-intended upgrade for Sig MPX and MCX pistols equipped with the integrated rear Picatinny rail cut, preserving the platform's compact footprint while adding ergonomic stability and improved shootability.