Sig Sauer MPX Copperhead 9mm Braced Pistol 3.5" Barrel - 20 Rd

Sig Sauer MPX Copperhead 9mm Braced Pistol 3.5" Barrel - 20 Rd

Redefine sub-compact personal defense with the Sig Sauer MPX Copperhead 9mm Pistol. Combining the ultra-reliable short-stroke gas piston architecture of the proven MPX platform with an extraordinarily compact footprint, the Copperhead delivers unmatched reliability and smooth cycling across all 9mm grain weights without requiring gas valve adjustments. Built around a monolithic Elite Series Cerakote® upper receiver and a lower receiver featuring an integrated rear stock/brace knuckle, this pistol delivers familiar AR-style manual arms in a lightning-fast, ultra-portable package.

The MPX Copperhead features a 3.5-inch carbon steel barrel with an integrated muzzle flash hider, keeping the overall front-end profile completely flush and snag-free. Engineered with complete ambidexterity in mind, the pistol includes dual-sided safety selectors, magazine releases, bolt catches, and charging handles for effortless operation with either hand. Outfitted with a single-stage polished hard-coat trigger, a PCB (Pistol Contour Brace), a top M1913 Picatinny optic rail, and a 20-round MPX pattern magazine, the Copperhead collapses down to just 14.5 inches for discreet transportation and rapid deployment.

Features

Monolithic Cerakote Upper & Integrated Knuckle Lower:
Features an ultra-compact monolithic upper receiver in Elite Series Cerakote, paired with a lower receiver featuring a built-in rear brace knuckle for maximum structural rigidity.

Self-Regulating Short-Stroke Gas Piston System:
Fires from a fully closed, locked rotating bolt short-stroke piston system that cleanly cycles all 9mm ammo weights and pressures without manual gas adjustments.

3.5" Barrel w/ Integrated Muzzle Flash Hider:
Ultra-short 3.5-inch carbon steel 1:10" twist barrel with an integrated flash hider provides an extremely streamlined profile for close-quarters maneuverability.

Fully Ambidextrous Controls:
Equipped with dual-sided safety selectors, magazine releases, charging handles, and bolt catches to ensure intuitive control for both right- and left-handed shooters.

Collapsible PCB Brace & M1913 Rail:
Includes a ultra-compact Pistol Contour Brace (PCB) that reduces total overall length to 14.5 inches collapsed, backed by a top Picatinny rail for optics attachment.

Specifications