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There are compact 9mm pistols, and then there is the MPX Copperhead. SIG took everything that made the MPX line a favorite and shrunk it down to a 3.5-inch barrel and 14.5 inches overall, tipping the scales at just 4.5 pounds. The result is a PDW that stows in a backpack or truck bag without a second thought, yet still runs like a full-size MPX when you put it to work. The monolithic upper wears SIG's Elite Series Cerakote in Coyote, so it looks as sharp as it shoots and shrugs off wear from real use.
Under the hood is the same short-stroke gas piston system the MPX platform built its reputation on. It runs cleaner than blowback guns, cuts down on felt recoil, and digests pretty much any weight or brand of 9mm without touching a gas valve. The bolt is a fully closed, locked rotating design, which is a big part of why this platform has a reputation for running in rough conditions. And because the layout mirrors an AR, everything falls right where your hands expect it, with the selector, mag release, charging handle, and bolt release all mirrored on both sides. Lefties get a fully equal experience here, which is rarer than it should be.
The 3.5-inch carbon steel barrel comes with an integrated muzzle device, and the barrel's 1:10 twist stabilizes common 9mm loads well. SIG's Pivoting Contour Brace (PCB) is built into the design with an integrated stock knuckle, and its swivel action lets it index naturally against your arm and deploy fast. Up top you have M1913 rail space ready for the red dot of your choice, since the Copperhead ships without sights. Add an optic, load up the included 20-round polymer MPX magazine, and this little 9mm turns range day into the fastest, flattest-shooting fun you can have with a pistol. Backed by SIG's Infinite Guarantee, it is a piece you buy once and enjoy for a long time.
No, this model ships without iron sights. The monolithic upper has a full-length M1913 rail on top, so most owners mount a compact red dot, which suits the Copperhead's fast, close-range role perfectly. You could also add folding backup irons if you prefer.
Not at all, and that is one of the platform's biggest strengths. The short-stroke gas piston system is designed to run all common weights and brands of 9mm without any gas adjustments. It also runs noticeably cleaner and softer than blowback-operated 9mm pistols.
Yes, the MPX is fully ambidextrous. The safety selector, magazine release, bolt release, and charging handle are all accessible from either side. Left-handed users get the same experience as right-handed users, which is a real standout feature in this category.
It ships with SIG's Pivoting Contour Brace, or PCB, built into an integrated stock knuckle on the lower. The brace uses a patented swivel design that pivots to match the position of your arm and deploys quickly. It keeps the overall package extremely compact at 14.5 inches.
| UPC | 798681599011 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | PMPX-3B-CH |
| Action | |
| ATF Type | Pistol |
| Barrel Finish | Black |
| Barrel Length | 3.5" |
| Caliber/Gauge | 9mm |
| Capacity | 20 + 1 |
| Color | COPPER |
| Length | 32.1000 |
| Model | |
| Number of Magazines | 1 20 rd. Magazine |
| Package Height | 4.0 |
| Package Width | 11.3 |
| Product Type | Semi-Auto Pistol |
| Safety | Ambi. Thumb Safety |
| Shipping Weight | 7.25 |
| Sights | No Sights |
| Sights Type | NONE |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
| Units per Box | 1 |
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