# Sig Sauer MPX K: 9mm Tactical Pistol, 35rd, Black Anodized

**Brand:** SIG Sauer
**Category:** Pistol Caliber Carbines
**Caliber:** 9mm

## Specifications

- **Caliber:** 9mm
- **Barrel Length:** 4.5"
- **Capacity:** 35 rounds
- **Finish:** Nitride
- **Weight:** 80 oz
- **Overall Length:** 22.25"
- **UPC:** 798681666744
- **SKU:** UCE3nOsYq

## Description

The Sig Sauer MPX K is a 9mm Luger semi-automatic pistol with a 4.5-inch cold hammer-forged carbon steel barrel, 35-round capacity, and a folding pivoting contour brace stock. It weighs 5 lbs and has a black hard coat anodized finish.

### Key Specifications
- **Caliber:** 9MM LUGER (9X19 PARA)
- **Action:** Semi-Automatic
- **Capacity:** 35 Rounds
- **Barrel Length:** 4.5 inches
- **Weight:** 5 lbs.
- **Finish:** Black Hard Coat Anodized

### Detailed Features
The gas piston operating system cycles reliably across a range of 9mm loads and keeps blowback debris out of the action, which simplifies cleaning compared to direct-impingement designs. The cold hammer-forged carbon steel barrel holds tight tolerances over extended use.

The Timney single-stage trigger has a crisp pull with minimal pre-travel, which helps with shot-to-shot consistency. The folding pivoting contour brace stock collapses for transport and deploys quickly. The KeyMod accessory rail accepts lights, grips, and other attachments without requiring proprietary hardware.

### Usage Scenarios
The 35-round magazine and low recoil make this a practical choice for competitive shooting where sustained fire matters. For home defense the pistol format is compact while still offering significant capacity. As a training platform the ergonomics and adjustable brace give shooters a consistent setup across sessions.

## Frequently Asked Questions

**Q: What caliber is the Sig Sauer MPX K?**

A: The MPX K is chambered in 9mm Luger (9x19 Para).

**Q: Who makes the MPX K?**

A: The MPX K is made by Sig Sauer.

**Q: What type of firearm is the Sig Sauer MPX K?**

A: It is a semi-automatic pistol in the pistol caliber carbine category.

**Q: What is the barrel length of the Sig Sauer MPX K?**

A: The MPX K has a 4.5-inch barrel.

**Q: How many rounds does the Sig Sauer MPX K hold?**

A: It has a 35-round capacity.

**Q: Does the Sig Sauer MPX K have a folding brace?**

A: Yes, the MPX K comes with a folding pivoting contour brace stock.

**Q: Where can I buy the Sig Sauer MPX K?**

A: Compare current vendor offers on this page.

## What Reviewers Say

*Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.*

> The MPX's trigger feels fantastic. You've got practically no takeup before a clean and obvious 4 and a half pound break with an almost imperceptible amount of travel before a tactile reset.
>
> — [Pew Pew Tactical](https://www.youtube.com/watch?v=-vb7TPTqkBE&t=267s)

> It takes a lot for me to get stoked about a trigger, but trust me when I say that this one, oh, it's good.
>
> — [Pew Pew Tactical](https://www.youtube.com/watch?v=-vb7TPTqkBE&t=283s)

> Some folks have reported some astoundingly inaccurate groups with the MPX when a suppressor is introduced even at close ranges.
>
> — [Pew Pew Tactical](https://www.youtube.com/watch?v=-vb7TPTqkBE&t=403s)

> The MPX shoots very soft for its size, both suppressed and in loud mode.
>
> — [Pew Pew Tactical](https://www.youtube.com/watch?v=-vb7TPTqkBE&t=434s)

## What Customers Say

*AI-generated insights from customer reviews*

The Sig Sauer MPX K gets consistently positive marks across the main discussion themes, with a few honest debates around cost and comparisons.

Build quality and finish get frequent praise. The hard coat anodized aluminum holds up well and owners describe it as solid in hand. Performance at the range is generally reported as reliable, with minimal recoil for a 9mm pistol of this size. The 35-round capacity is the single most often cited advantage, particularly for competitive shooting and extended range sessions. Ergonomics are well-regarded, with controls that fall naturally under hand.

Customization gets its own ongoing conversations. Owners discuss optics, lights, and grip options through the KeyMod rail. The MPX K is also frequently compared to AR-style pistols and other submachine-gun-format options; in most of those threads the MPX K's gas piston system and build quality favor it, but price is the counterpoint. It sits at a higher cost than several competing platforms, and that drives most of the negative discussion. Maintenance is generally straightforward though some notes about the design's complexity come up occasionally.

## Pricing

**15 offers available**

| Vendor | Price |
|--------|-------|
| Gunbuyer Com | $2199.99 |
| Brownells | $2199.99 |
| RK Guns | $2199.99 |
| Guns Com | $2199.99 |
| Kygunco Com | $2199.99 |
| Buds Gun Shop | $2199.99 |
| Impactguns Com | $2199.99 |
| Grabagun Com | $2199.99 |
| Ar 15 Discounts Com | $2199.99 |
| Shootingsurplus Com | $2199.99 |

*...and 5 more offers*

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*Data from [GunsNation](https://gunsnation.com)*