| Brand | Sig Sauer |
| SKU | PMPX4B935 |
| UPC | 798681666744 |
| Grip | Black Polymer |
| Action | Semi-Automatic |
| Finish | Blue/Black |
| Weight | 5.05 pounds |
| Capacity | 35+1 |
| Grip Safety | No |
| Optic Ready | Yes |
| Barrel Length | 4.5 inches |
| Manual Safety | Yes |
| Overall Length | 22.25 inches |
| Trigger Safety | No |
| Caliber / Gauge | 9mm |
| Threaded Barrel | Yes |
| Magazines Included | 1 |
| Ambidextrous Safety | Yes |
| Condition | New |
SIG Sauer MPX K Folding Brace 9mm Blue/Black Pistol
Firearms ship to the FFL dealer you name at checkout. Price and stock are re-checked live when you order.
The SIG Sauer MPX K is a compact 9mm semi-automatic pistol built around a closed-bolt gas-piston operating system. Its 4.50-inch carbon steel barrel has a Black Nitride finish and a 13.5x1 threaded muzzle for suppressor-compatible setups. The platform combines an aluminum receiver with a modern M-LOK handguard, full-length Picatinny rail, SIG PCB folding pivoting contour brace, and black polymer grip. A Timney single-stage trigger provides a crisp control interface, while the ambidextrous safety and controls support flexible handling. The pistol accepts 35-round magazines and measures 22.25 inches overall.
Key features
- Closed-bolt gas-piston system supports reliable cycling and clean, consistent operation.
- 4.50-inch Black Nitride carbon steel barrel with 13.5x1 threads is configured for suppressor use.
- SIG PCB folding pivoting contour brace provides compact storage and supported shooting control.
- M-LOK handguard and Picatinny receiver rail support accessory and optic installation.
- Timney single-stage trigger delivers a crisp, predictable trigger pull.
- Ambidextrous controls and safety accommodate right- and left-handed users.
The SIG Sauer MPX K combines compact dimensions, modular accessory mounting, and dependable 9mm performance in a folding-brace pistol platform.
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