The Sig Sauer MPX: 9mm Gas Piston Rifle, 30-Round, Adjustable Stock is a 9mm pistol caliber carbines from Sig Sauer. It is available from 1 vendor at $1999.99.
Name: Sig Sauer MPX: 9mm Gas Piston Rifle, 30-Round, Adjustable Stock
Brand: Sig Sauer
Category: Pistol Caliber Carbines
Caliber: 9mm
Barrel Length: 16"
Capacity: 30 rounds
UPC: 798681596201
SKU: UCE3nOaD3
Recently Added
Concealed CarryBest 9mm HandgunsBest Semi-Auto Shotguns9mm RevolverOptic-ReadyWeatherby Mark VMatch Pistols
AI-generated insights derived from customer reviews and discussions on popular gun-enthusiast forums.
What caliber is the Sig Sauer MPX?
The Sig Sauer MPX is chambered in 9mm Luger (9x19 Para).
What is the barrel length of the Sig Sauer MPX?
It has a 16-inch barrel.
How many rounds does the Sig Sauer MPX hold?
It has a 30-round capacity.
What type of firearm is the Sig Sauer MPX?
The MPX is a semi-automatic pistol caliber carbine with a gas piston operating system.
Who makes the MPX?
The MPX is made by Sig Sauer.
Where can I buy the Sig Sauer MPX?
Compare current vendor offers on this page.
The Sig Sauer MPX is a semi-automatic rifle chambered in 9mm Luger with a gas piston operating system, 16-inch barrel, and 30-round capacity. The gas piston design keeps carbon fouling out of the action, which translates to cleaner operation over longer shooting sessions compared to direct impingement systems. At 9.9 lbs it's on the heavier side for a 9mm carbine, but the adjustable folding stock helps with both fit and transport.
The gas piston system reduces the maintenance burden — the bolt carrier runs cleaner and heat stays further from the shooter's hand. A nitride finish on the receiver and handguard resists corrosion and wear. The Picatinny rail system gives full flexibility for optics, lights, and other accessories; there are no fixed iron sights, so you'll need to mount something before heading to the range.
The folding/adjustable stock handles both different shooters and storage in a case where a fixed stock would be inconvenient. The 9mm chambering keeps costs down for high-volume practice and produces manageable recoil at 9.9 lbs.
| Caliber | 9mm |
| Model | MPX |
| Capacity | 30 rounds |
| Barrel length | 16" |
| Overall length | 35.25" |
| Weight | 105.6 oz |
| Action | Semi Auto |
| Finish | Nitride |
| Color | Nitride Receiver, Nitride Handguard |
| Stock type | Adjustable, Folding |
| Stock material | Synthetic |
| Sights | RS: None, Picatinny Rail, FS: None, Picatinny Rail |
| Safety | Manual |
The Sig Sauer MPX is chambered in 9mm Luger (9x19 Para).
It has a 16-inch barrel.
It has a 30-round capacity.
The MPX is a semi-automatic pistol caliber carbine with a gas piston operating system.
The MPX is made by Sig Sauer.
Compare current vendor offers on this page.
AI-generated insights derived from customer reviews and discussions on popular gun-enthusiast forums.
The MPX in its configuration has a strong reputation for reliability, particularly in adverse conditions where the gas piston design holds an advantage. Owners running it hard with cheap or dirty ammunition report fewer cycling issues than comparable DI carbines. Accuracy is consistently rated well — the 16-inch barrel wrings reasonable performance from 9mm at practical carbine distances.
The ergonomics draw positive comments, especially the ambidextrous controls that left-handed shooters appreciate. The adjustable stock fits a wide range of users without swapping parts. Weight is the most common complaint: 9.9 lbs is heavy for a 9mm carbine, and some owners feel the platform over-engineers for the caliber. Compared to lighter options, the MPX asks you to accept the extra weight for the gas piston advantages.
Price is the other regular topic. The MPX sits at the high end of 9mm carbine pricing, which triggers the usual buy-vs-alternative debate in forums. Aftermarket support exists but is more limited than AR-platform accessories, which matters to shooters who customize heavily. For buyers who prioritize the gas piston reliability and Sig's build quality and aren't bothered by the weight or cost, it holds up well over time.
Price Range: $1999.99 - $1999.99
| Vendor | Price | Condition | Link |
|---|---|---|---|
| Gunbuyer Com | $1999.99 | New | Buy Now |
9mm
9mm
.223 Remington
9mm
9mm
.223 Remington
9mm
9mm
9mm
9mm
9mm