SB Tactical MPX3 Position Adjustable Pistol Stabilizing Brace w/ Nylon Strap - Fits Sig MCX/MPX
or 4 interest-free payments of $40.00 with 
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
- Free standard shipping on orders $139+ details
- 90-day no-hassle returns policy
- Limited Warranty what it covers
Frequently bought together
From orders that included this item
Product description
SB Tactical MPX: Three-Position Brace Contoured to SIG Receiver Cuts
Features
- 3-position adjustable length (3.875″, 6.0″, 8.25″)
- Dimensioned specifically to fit SIG MPX and MCX receiver cuts
- Integral M1913 adjustable housing
- Adjustable nylon strap
- Complete assembly ready to install
- US veteran designed
The SB Tactical MPX solves the fit and adjustability problem by contouring specifically to SIG MPX and MCX receiver geometry with three distinct length positions. This brace works well for shooters needing proper length of pull adjustment across different shooting positions, builds where compact storage and full extension both matter, and anyone wanting a purpose-built SIG solution. The integral M1913 housing and receiver-specific dimensions provide solid lockup without adapters or shims, while three adjustment positions accommodate everything from close-quarters work to extended shooting stances.
Note: Not compatible with SIG MPX Copperhead models or SIG MCX Stock Adapter Kit. Requires genuine SIG MCX lower receiver for MCX compatibility.
Specifications
- Brand: SB Tactical
- Model: MPX PSB
- MPN: MPX-01-SB
- Platform: SIG MPX/SIG MCX
- Adjustment Positions: 3
- Length Positions: 3.875″, 6.0″, 8.25″
- Width: 2.25″ (maximum)
- Strap Width: 1.0″
- Weight: 19.1 oz
- Mounting: Integral M1913 Adjustable Housing
- Color: Black
- Made in: USA
What’s Included
- 1x MPX stabilizing brace (complete assembly)
- 1x Adjustable nylon strap
- 1x M1913 receiver saddle
Customer reviews
No reviews yet. Bought this one? Tell the next builder how it went.
Questions & Answers
No questions yet. Ask about fit, install or compatibility and our team answers within a business day.
Warranty & returns
Limited Warranty
SB Tactical products are covered by a limited warranty against defects in materials and workmanship. If a covered defect appears under normal use, SB Tactical will repair or replace the product at their discretion. This warranty does not cover damage caused by misuse, modification, improper installation, or normal wear and tear.
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.
