SIG MPX Copperhead – 9mm, 4.5″ Barrel, 20rd, Black, PMPX-4B-CH-NB

The SIG MPX Copperhead 9mm 4.5 inch is a semi-automatic firearm chambered in 9mm Luger. It features a 4.5 inch barrel and ships with a 20 round magazine.

This model utilizes SIG’s short-stroke gas piston system and is built on the MPX platform. The configuration supports accurate shot placement consistent with factory barrel specifications.

The MPX Copperhead operates with a semi-automatic action and accepts compatible MPX magazines. Its gas-operated system provides reliable cycling when used with appropriate 9mm ammunition.

Key Features:

• Chambered in 9mm Luger

• 4.5 inch barrel

• 20 round magazine

• Short-stroke gas piston system

• Semi-automatic operation

• Accepts MPX magazines

• Black finish

• Part number PMPX-4B-CH-NB

Manufacturer Specifications:
Caliber: 9mm Luger
Barrel Length: 4.5 inches
Capacity: 20 rounds
Operating System: Short-stroke gas piston
Action: Semi-automatic
Finish: Black
Part Number: PMPX-4B-CH-NB
Origin: Manufacturer listed production

FAQ:
Q: What caliber is the SIG MPX Copperhead chambered in?
A: It is chambered in 9mm Luger.

Q: What is the barrel length?
A: It features a 4.5 inch barrel.

Q: What is the magazine capacity?
A: It ships with a 20 round magazine.

Q: What operating system does it use?
A: It uses a short-stroke gas piston system.

Brought to you by Black Bayou Armory.