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SIG SAUER MPX Copperhead, Semi-automatic, 9mm, 4.5" Barrel, 20+1 Rounds

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Key Features

  • 9mm
  • 20+1 rounds
  • 4.5" threaded barrel with flash hider
  • 2-position Pivoting Contour Brace
  • Short-stroke gas piston operating system
  • Fully ambidextrous controls
  • Rear-end Picatinny rail for slings
  • Includes (1) 20-rd. magazine
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SIG SAUER® MPX Copperhead 9mm Semi-automatic Pistol

At just 15.5" long and 4.5 pounds, the MPX is perfect for the narrow confines of home defense and building-clearing duty. And the AR-style controls are immediately familiar for those familiar with the platform. The only difference is that the MPX sports fully ambidextrous controls—so it's easy to operate for righties AND lefties.

Built around a monolithic Elite Series upper receiver that delivers greater strength than stamped or forged receivers, the MPX utilizes a short-stroke gas piston system that allows it to run all weights and brands of 9mm ammunition with no adjustments. It comes equipped with the new SIG SAUER Pivoting Contour Brace, which adapts to the movement of your arm with a patented swivel operation for perfect placement and rapid deployment. The full-length topside Picatinny rail accommodates both a red dot and iron sights, and a 3-slot rail on the rear of the Pistol accommodates a slide. For personal protection, home defense, or plain-old fun at the range, the MPX Copperhead delivers in every way.

  • Short-stroke gas pistol system can handle all weights and brands of 9mm ammo
  • Monolithic (one-piece) upper receiver delivers greater strength than stamped or forged receivers
  • Cerakote receiver finish provides enhanced corrosion resistance
  • AR-style controls
  • Fully ambidextrous: dual-sided selector switch, magazine release, charging handle and bolt release
  • 2-position Pivoting Contour Brace adapts to the movement of your arm with patented swivel operation for perfect placement
  • Full-length Picatinny rail accommodates both a red dot and iron sights
  • Includes (1) 20-rd. magazine

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Key Specifications

  • Item Number: 724122
  • Caliber: 9mm
  • Action: Short-stroke gas piston
  • Capacity: 20+1
  • Barrel Length: 4.5"
  • Barrel Twist: 1:10"
  • Stock: 2-position Pivoting Contour Brace
  • Upper Receiver: Monolithic with Cerakote finish
  • Overall Length: 15.5"
  • Overall Weight: 4.5 lbs.
  • Mfg. Number: PMPX-4B-CH