Sig Sauer MPX 9mm SBR 4.5" Folding Stock Black 35RD

Sig Sauer MPX 9mm SBR 4.5" Folding Stock Black 35RD

The Sig Sauer MPX 9mm SBR combines the modular MPX platform with a compact 4.5" barrel, folding stock, and aluminum M-LOK handguard. Built around SIG's closed-bolt gas-piston operating system, this factory short-barreled rifle provides the compact dimensions and modularity that have made the MPX one of SIG Sauer's most recognizable 9mm platforms.

This configuration is finished in matte black and includes a 35-round magazine. Its folding stock further reduces the overall footprint of the firearm and, according to SIG Sauer, the MPX remains operable with the stock folded.

4.5" MPX SBR Configuration

At the center of this MPX configuration is its compact 4.5" barrel. Combined with the folding rear assembly, the short barrel creates an exceptionally compact factory MPX configuration while retaining the features of the rifle platform.

Closed-Bolt Gas-Piston Operating System

The MPX uses SIG Sauer's closed-bolt gas-piston operating system. SIG designed the system around reliable and durable operation while giving the MPX a distinctive operating architecture among modern 9mm platforms.

Folding Stock

This factory SBR is equipped with a SIG folding stock. Folding the stock substantially reduces the firearm's overall footprint for storage and transportation, and SIG states that the MPX remains capable of operation while the stock is folded.

Aluminum M-LOK Handguard

An aluminum M-LOK handguard surrounds the front of the platform and provides attachment locations for compatible M-LOK accessories. SIG also offers MPX M-LOK handguards in multiple lengths as separate accessories, allowing owners to further configure the platform.

35-Round Magazine

The MPX ships with one 35-round magazine, providing substantial factory capacity for the compact 9mm platform.

Key Features

• Sig Sauer MPX short-barreled rifle
• Chambered in 9mm
• Semi-automatic action
• 4.5" barrel
• Closed-bolt gas-piston operating system
• SIG folding stock
• Operable with stock folded according to SIG Sauer
• Aluminum M-LOK handguard
• Manual safety
• Matte black finish
• 35-round capacity
• One 35-round magazine included
• Compact and modular MPX platform

Specifications

What's Included

• Sig Sauer MPX 9mm SBR with 4.5" Barrel
• SIG Folding Stock
• Aluminum M-LOK Handguard
• 1 x 35-Round Magazine
• Factory Documentation
• Factory Packaging

Why Choose the Sig Sauer MPX 4.5" SBR?

The Sig Sauer MPX 4.5" SBR delivers a factory-built compact configuration without giving up the modular features that define the MPX platform. Its combination of a 4.5" barrel and folding stock creates a remarkably compact 9mm rifle, while the closed-bolt gas-piston operating system provides the foundation of the platform.

With an aluminum M-LOK handguard, 35-round magazine, folding stock, and matte black finish, this MPX is an excellent option for customers specifically looking for a premium, compact factory 9mm SBR.