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$2,889.00Original price was: $2,889.00.$2,754.00Current price is: $2,754.00.
🚚 Ships to your local FFL — we handle the paperwork and coordinate with your dealer. Most firearms ship same or next business day. Local? Free in-store pickup in Roanoke, TX.
NEMO Arms Mongoose 9mm PCC — the only pistol-caliber carbine at this price point running a short recoil operating system instead of direct blowback. Takes Magpul CZ-style 35-round mags, features full ambidextrous AR-like controls, M-LOK handguard, threaded 5.8″ barrel (1/2×28 TPI), and comes with a custom NEMO range bag. Made in Caldwell, Idaho. Ideal for competition, home defense, and suppressor hosting.
The Nemo Arms Mongoose 9mm AR Pistol delivers precision engineering and firepower in an ultra-compact platform. Built on the same aerospace-grade manufacturing principles that made Nemo famous for semi-automatic .300 Winchester Magnum rifles, the Mongoose chambers 9mm Luger with a 5.8″ stainless barrel and accepts standard Glock-compatible magazines—including extended 35-round capacity. This is CQB and home defense reimagined by a company that refuses to compromise on materials or design.
About Nemo Arms
Founded in 2010 in Bend, Oregon, Nemo Arms earned its reputation by accomplishing what many thought impossible: reliable, semi-automatic .300 Winchester Magnum rifles in an AR-platform form factor. The company’s engineering ethos centers on aerospace-grade materials—titanium, stainless steel, and carbon fiber—paired with proprietary systems that manage extreme pressures and recoil without sacrifice. Every Nemo rifle is Made in USA, featuring titanium-enhanced bolt carrier groups, matched stainless barrels, and proprietary muzzle devices. The Mongoose represents Nemo’s expertise distilled into a compact 9mm platform that brings the same obsessive attention to detail to pistol-caliber AR design.
Key Specifications
Caliber
9mm Luger
Barrel
5.8″ stainless steel
Action
Gas-operated semi-automatic
Weight
~5.1 lbs
Magazine
35-round (Glock-compatible)
Stock/Brace
Pistol brace (non-NFA)
Finish
Black
The Mongoose Platform
The Mongoose 5.8″ represents Nemo’s answer to shooters seeking a compact, magazine-fed 9mm platform with genuine stopping power and reliability. At roughly 5.1 lbs, it’s light enough for all-day carry applications yet rigid enough to sustain the precision Nemo demands. The 5.8″ stainless barrel optimizes velocity while maintaining a package that excels in tight spaces—ideal for home defense, vehicle storage, or close-quarters drills. Glock-compatible magazines mean you can leverage affordable, proven ammunition storage; the 35-round capacity option transforms the Mongoose into a legitimate force multiplier without relying on exotic feed systems.
Gas-operated operation ensures the Mongoose runs clean and flat, minimizing felt recoil in 9mm while delivering the ergonomics AR shooters demand: ambidextrous controls, rail-mounted accessories, and modular furniture compatibility. The non-NFA pistol brace configuration keeps this platform accessible in all 50 states. Whether you’re setting up a truck gun, home defense backup, or a suppressed training platform, the Mongoose combines Nemo’s obsessive engineering with practical 9mm economics—a rare combination in the AR pistol market.
Why Buy from Western Sport
Western Sport is a licensed FFL/SOT dealer based in Roanoke, TX (North Texas, serving the DFW area) with over 15 years of experience since 2007. We stock premium platforms like Nemo Arms and specialize in firearm transfers, compliance, and customer support. Call us at 817-393-4000 with questions about the Mongoose, shipping, or local pickup options. We’re committed to getting you behind quality hardware backed by expertise.
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