SIG SAUER MPX

Posted May 19, 2023

The SIG SAUER MPX is a multi-configurable submachine gun (SMG) that has become increasingly popular in the firearms market since its introduction in 2014. What sets the MPX apart from other firearms is its modularity, allowing for user configuration of the weapon's caliber, size, stock, barrel length, and other features. In addition, the MPX also features an ambidextrous design with controls that can be switched to either side of the weapon. As a result of its many advantages, the SIG SAUER MPX has quickly grown in popularity for regular and professional users, and become a mainstay in the competitive shooting world.

Performance

The SIG SAUER MPX is a incredibly formidable weapon, with great performance indicators. It is capable of firing both 9mm and .40 S&W rounds, making it equally effective for both personal defense and recreational shooting. When firing 9mm rounds, the MPX is able to reach muzzle velocities of over 1,300 ft/s, and over 900 ft/s for .40 S&W rounds. This velocity is great for both range and defensive scenarios, allowing for effective suppression capabilities. Additionally, the MPX features a light-weight, rotating, short stroke piston system for a smooth and reliable performance. As a result, the MPX is capable of firing at a cyclic rate of over 850 rounds per minute, with an effective range of up to 600 yards.

Reliability and Durability

The SIG SAUER MPX is renowned for its reliability and durability, which are both remarkable. The MPX is designed with a corrosion-resistant steel receiver and is tempered and hardened to ensure a long life. The weapon also has been tested to over 10,000 rounds in multiple configurations and still remains in pristine condition. The 3-lug rotating bolt eliminates jamming and ensures reliability even after long battles. Additionally, the bolt is constructed with a titanium firing pin and heavy-duty extractor that prevents any kind of malfunctions or jamming. The unique recoil system of the MPX also greatly increases the weapon's reliability and accuracy.

Handling/Ergonomics

The SIG SAUER MPX provides superior ergonomics when compared to many other submachine guns. Weighing in at just under 8.5 lbs (fully loaded) and with an overall length of 16.25 inches, the MPX is portable and easy to maneuver. Additionally, the MPX features ambidextrous controls that can easily be changed to either side of the weapon’s frame. This allows for quick and easy operation in tight quarters when switching from left to right-handed shooters. The safety switch is conveniently located above the trigger, which makes it easily accessible with your thumb, while the magazine release is located just behind it. Additionally, the MPX comes with a robust integrated handguard that allows for further customization such as with picatinny or KeyMod accessories.

Sighting System

The SIG SAUER MPX offers a variety of sighting potentials for users to choose from. It comes equipped with either a Trijicon 1-4x24mm Reflex Sight, a Leupold HAMR 4x24mm Prism Sight, or a factory-matched set of flip-up iron sights. This variety of optics gives users the capability to quickly and accurately acquire targets in any light conditions. The MPXM-LOK handguard also allows for the attachment of various accessories to further customize the sighting system.

Conclusion

With all of its advantages, the SIG SAUER MPX is one of the most versatile and popular submachine guns in the market today. It has great performance and reliability, with a durable build and light-weight construction. It also has superior ergonomics, with ambidextrous controls and quick access to safety and magazine release. Finally, it features a variety of sighting systems, including flip-up iron sights and optics, allowing for accurate target acquisition in any environment. These features combine to make the SIG SAUER MPX a great choice for both professionally and recreational shooters.

Pros & Cons

Pros:

• Very accurate with its 9mm round.

• Accommodates a wide range of aftermarket accessories.

• Ambidextrous controls make it suitable for people of all handedness.

• Picatinny rail for easy mounting of optics.

• Adaptability to a variety of barrel lengths and stock configurations.

• Solid build quality.

• Comfortable ergonomics.

• Available in various calibers.

Cons:

• Heavier than some other available submachine guns.

• Limited magazine capacity in some calibers.

• Expensive, with some upgrades and accessories further adding to the cost.

Who Should Buy

Anyone who is legally allowed to do so, is over the legal age of purchase, and has passed a background check should be able to purchase the SIG SAUER MPX.

Anyone who does not meet all of the legal requirements should not buy the SIG SAUER MPX. Furthermore, if a person has no plans to use the gun responsibly or follows their local regulations, they should not buy the SIG SAUER MPX.

Comparisons

Product	Weight (oz)	Length (in)	Barrel Length (in)	Caliber
SIG SAUER MPX	79.2	16.5	9.5	9mm
Heckler & Koch MP5	7.4	13.5	8.86	9mm
FN SCAR-SC	5.4	15.5	9	9mm
Steyr AUG	8.8	18.5	16	9mm

Features / Specs

• Semi-automatic, short-stroke gas piston system

• 8”, 9” or 16” cold hammer-forged barrel

• Aluminum alloy upper receiver

• Interchangeable barrel – caliber conversion in seconds - 9mm, .357SIG, .40 Auto and .45 ACP

• Free floating ergo-fit M-LOK rail system

• Ambidextrous controls

• Fully-locked short-stroke gas piston system

• Adjustable gas regulator

• Quick-change barrel system

• Two-position receiver-mount safety lever

• Ambidextrous magazine release and selector lever

• Tool-less calibration of Gas Piston System

• Fully-supported, stainless steel barrel

• Bolt release lever

• Enlarged trigger guard for operation with gloves

• Ambidextrous charging handle

Popular Accessories

Magpul MBUS Pro Flip Up Sight

SIG SAUER Red Dot Sight

SIG SAUER SBX Pistol Brace

Magpul PMAG 30 Magazine

SIG SAUER Ambidextrous Selector

SIG SAUER Pistol Grip

Optic Mounts

Bipods

Flash Hider

Rail Covers

Accuracy

The SIG SAUER MPX is generally considered to be one of the most accurate SMGs in the market. The gun utilizes a short stroke, direct impingement system, and has a cold hammer-forged barrel that is known for having excellent accuracy and minimal recoil. Additionally, the 9mm version of this gun is capable of firing multiple bullet weights with great accuracy. On numerous occasions, users have reported being able to make 100 yard shots with the gun and achieve accuracy comparable to that of a rifle.