SIG SAUER PMPX-4B-9-35 MPX K 9MM 35+1 4.50" BLACK PISTOL W/BRACE
Guns International #: 103617478 Seller's Inventory #: PMPX-4B-9-35
Category: Sig Sauer Pistols - MPX - Tactical Pistols

Seller's Information
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Verified Seller
Seller: Garys Gun Shop SD
Member Since: 11/7/25
State: South Dakota
Zip: 57105
Country: United States
Phone: (605) 332-6119 Ext. 2
Platinum Seller
Number of Active Listings: 422
Seller: FFL Dealer
Return Policy: 3 day inspection and return policy on used guns.
NO RETURNS ON AMMUNITION. Optics over $200 may be held for payment to process and will be shipped with ADULT SIGNATURE REQUIRED. Ammunition, Firearms, Knives, and Magazines will be shipped ADULT SIGNATURE REQUIRED.
Payment Types Accepted: credit card, bank check, money order

About Us: Garys Gun Shop is a family-owned firearms retailer in Sioux Falls, South Dakota, serving customers for over 30 years with exceptional service and quality firearms. We maintain an inventory of more than 2,000 new and used firearms, specializing in premium brands including Wilson Combat, Nighthawk Custom, Cooper Firearms, Benelli, Browning, Weatherby, and Winchester. Our knowledgeable staff helps each customer find the perfect firearm. We also operate a 12-lane indoor range and gunsmithing services.
You Can Purchase This Item Now, By Following This Link to garysgunshop.com


Description:
SIG SAUER MPX K 9mm (PMPX-4B-9-35) – 35+1, 4.5" Barrel, Black, PCB Folding Brace
The SIG SAUER MPX K is a modular, compact 9mm pistol-caliber platform built for reliability and adaptability. Featuring a closed-bolt, short-stroke gas piston system, the MPX K excels in durability and consistent cycling—even in harsh conditions or suppressed setups. The system allows rapid barrel and handguard swaps for tailored configurations, making it ideal for personal defense and tactical applications.
A SIG PCB folding brace provides stability in both deployed and folded positions, allowing for ultra-compact storage without sacrificing functionality. The M-LOK alloy handguard is updated for accessory mounting and suppressor accommodation. A lightning-fast flat Timney Trigger delivers precision and fast follow-up shots, maximizing sub-gun accuracy in any shooting environment.
The MPX K ships with one 35-round polymer magazine, and its AR-style controls—including ambidextrous selector, mag release, and bolt release—make operation intuitive for any user. The carbon steel, threaded barrel ensures compatibility with muzzle devices and suppressors.
Key SpecificationsFeatureValue Caliber9mm LugerCapacity35+1Barrel Length4.5" (Carbon Steel, Threaded M13.5x1mm)Operating SystemClosed Bolt Gas PistonOverall Length22.25"Height8"Width2.4"Weight5 lbsTwist Rate1:10HandguardM-LOK AlloyMagazine TypeMPX Polymer (35rd included)BraceSIG PCB FoldingTriggerFlat TimneyReceiver FinishHard Coat AnodizedAccessory RailM-LOKHighlights
  • Adaptive modular design accepts a variety of handguards and barrels for suppressor compatibility.
  • SIG PCB folding brace offers compact storage and operability while folded.
  • Timney Trigger ensures crisp, reliable performance in high-volume scenarios.
  • AR-style ambidextrous controls for intuitive, rapid operation.
  • Suppressor-ready barrel and updated handguard for personalized setup.
  • Ships with a 35-round magazine, maximizing firepower in the sub-gun category.
The MPX K is a preferred choice among professionals and civilian shooters looking for supreme reliability, modularity, and compact firepower in a pistol-caliber platform.The SIG SAUER MPX K PMPX-4B-9-35 is a modular, ultra-reliable 9mm pistol featuring a closed bolt gas piston system and a compact folding PCB brace for versatile tactical use.
Key Features
  • Short-stroke gas piston system for consistent, clean cycling and durability.
  • Modular construction for easy swap of handguard and barrel lengths—suppressor ready.
  • SIG PCB folding brace enables stable firing when folded, optimizing for compact transport.
  • Flat Timney trigger for crisp, fast shooting.
  • M-LOK alloy handguard for accessories and improved heat dissipation.
Technical SpecificationsSpecificationDetailCaliber9mm Luger Capacity35+1 Barrel Length4.5" threaded M13.5x1 mm Overall Length22.25" Height8" Width2.4" Weight5 lbs Twist Rate1:10 Magazine Included1x 35rd polymer BraceSIG PCB folding ControlsAR-style, ambidextrous HandguardM-LOKTriggerTimney flat single stage 
The SIG MPX K stands out for its suppressed compatibility, adaptable form factor, and fast action, making it ideal for professionals or serious civilian shooters wanting maximum reliability and modularity in a pistol-caliber platform.

SHIPPING TO AK WILL BE EXTRA

SOLD

Handgun Caliber: 9x19mm Parabellum (9mm Luger, 9x19mm NATO)
Manufacturer: SIG SAUER
Model: MPX
Caliber Info: 9MM
Condition: NEW
Stock: PISTOL BRACE