Sig Sauer115680249
Sig Sauer MPX 9mm Luger Polymer Magazine - Black$47.00
Availability: In Stock
The Sig Sauer MPX Copperhead 9mm is a compact, modern tactical pistol built on proven submachine gun architecture—ideal for shooters who want rifle-like controls and ergonomics in a short-barreled platform. With its 3.5" barrel, integrated muzzle brake, and 20+1 capacity, the Copperhead delivers the handling familiarity of an AR platform in a genuinely portable package. It's equally at home on the range, in training scenarios, or as a specialized duty pistol for those who value ambidextrous controls and genuine reliability over trends.
The Copperhead's standout feature is its new SIG Pivoting Contour Brace (PCB), which uses a patented swivel mechanism to naturally conform to your arm during firing and deploy rapidly when repositioned. Unlike rigid braces, the PCB actually adapts to shooter movement, reducing fatigue during extended sessions and improving consistency. The monolithic upper receiver sports SIG's Elite Series Coyote Cerakote finish—durable, corrosion-resistant, and optimized for both looks and function.
Operating via short-stroke gas piston, the MPX cycles all standard 9mm ammunition without adjustment, so you're not tied to a single load or brand. The fully-rotating bolt locks completely in battery, delivering the kind of reliability SIG built its reputation on. Every control is truly ambidextrous: dual-sided safety, magazine release, charging handle, and bolt release. Lefties get the same natural, fast manipulation as righties—no compromise.
At 4.5 pounds and 14.5 inches overall with the brace folded, the Copperhead is genuinely compact without feeling like a toy. The carbon-steel barrel, alloy forend, and polymer grip keep weight reasonable while maintaining durability. M1913 Picatinny rail on the upper makes optics mounting straightforward. One 20-round polymer magazine comes in the box.
| Caliber | 9mm Luger |
| Barrel Length | 3.5" |
| Overall Length | 14.5" |
| Overall Width | 2.4" |
| Height | 8" |
| Weight | 4.5 lbs |
| Magazine Capacity | 20+1 |
| Magazine Type | MPX polymer |
| Bolt System | Rotating, fully-locked |
| Gas System | Short-stroke piston |
| Barrel Twist | 1:10 |
| Barrel Material | Carbon steel |
| Receiver Finish | Coyote Elite Cerakote |
| Grip | Black polymer, ambidextrous |
| Forend | Alloy |
| Stock/Brace | SIG Pivoting Contour Brace (PCB) |
| Trigger | Single-stage, polished, hard-coat |
| Rail System | M1913 Picatinny |
| Included Magazines | 1x 20-round polymer magazine |
Yes. The safety, magazine release, charging handle, and bolt release are all dual-sided, making it equally suitable for left- and right-handed shooters without modifications or workarounds.
The short-stroke gas piston system cycles all standard 9mm Luger ammunition—different weights and brands—without requiring gas valve adjustments or tuning.
The PCB uses a patented swivel mechanism that allows the brace to move naturally with your arm during firing, adapting to your personal grip and stance. It can be rapidly repositioned or deployed as needed, unlike fixed braces.
The monolithic upper receiver features an M1913 Picatinny rail for mounting red dots, magnified optics, or other accessories.
One 20-round MPX polymer magazine is included with the pistol.
SKU: 198466874 • Weight: 7.46oz
Availability: In Stock
The Sig Sauer MPX Copperhead 9mm is a compact, modern tactical pistol built on proven submachine gun architecture—ideal for shooters who want rifle-like controls and ergonomics in a short-barreled platform. With its 3.5" barrel, integrated muzzle brake, and 20+1 capacity, the Copperhead delivers the handling familiarity of an AR platform in a genuinely portable package. It's equally at home on the range, in training scenarios, or as a specialized duty pistol for those who value ambidextrous controls and genuine reliability over trends.
The Copperhead's standout feature is its new SIG Pivoting Contour Brace (PCB), which uses a patented swivel mechanism to naturally conform to your arm during firing and deploy rapidly when repositioned. Unlike rigid braces, the PCB actually adapts to shooter movement, reducing fatigue during extended sessions and improving consistency. The monolithic upper receiver sports SIG's Elite Series Coyote Cerakote finish—durable, corrosion-resistant, and optimized for both looks and function.
Operating via short-stroke gas piston, the MPX cycles all standard 9mm ammunition without adjustment, so you're not tied to a single load or brand. The fully-rotating bolt locks completely in battery, delivering the kind of reliability SIG built its reputation on. Every control is truly ambidextrous: dual-sided safety, magazine release, charging handle, and bolt release. Lefties get the same natural, fast manipulation as righties—no compromise.
At 4.5 pounds and 14.5 inches overall with the brace folded, the Copperhead is genuinely compact without feeling like a toy. The carbon-steel barrel, alloy forend, and polymer grip keep weight reasonable while maintaining durability. M1913 Picatinny rail on the upper makes optics mounting straightforward. One 20-round polymer magazine comes in the box.
| Caliber | 9mm Luger |
| Barrel Length | 3.5" |
| Overall Length | 14.5" |
| Overall Width | 2.4" |
| Height | 8" |
| Weight | 4.5 lbs |
| Magazine Capacity | 20+1 |
| Magazine Type | MPX polymer |
| Bolt System | Rotating, fully-locked |
| Gas System | Short-stroke piston |
| Barrel Twist | 1:10 |
| Barrel Material | Carbon steel |
| Receiver Finish | Coyote Elite Cerakote |
| Grip | Black polymer, ambidextrous |
| Forend | Alloy |
| Stock/Brace | SIG Pivoting Contour Brace (PCB) |
| Trigger | Single-stage, polished, hard-coat |
| Rail System | M1913 Picatinny |
| Included Magazines | 1x 20-round polymer magazine |
Yes. The safety, magazine release, charging handle, and bolt release are all dual-sided, making it equally suitable for left- and right-handed shooters without modifications or workarounds.
The short-stroke gas piston system cycles all standard 9mm Luger ammunition—different weights and brands—without requiring gas valve adjustments or tuning.
The PCB uses a patented swivel mechanism that allows the brace to move naturally with your arm during firing, adapting to your personal grip and stance. It can be rapidly repositioned or deployed as needed, unlike fixed braces.
The monolithic upper receiver features an M1913 Picatinny rail for mounting red dots, magnified optics, or other accessories.
One 20-round MPX polymer magazine is included with the pistol.
SKU: 198466874 • Weight: 7.46oz