NEMO Mongoose 9mm 5.8″ Threaded Pistol w/ Brace 35rd

About this product

The NEMO OMEN MONGOOSE is a compact, lightweight pistol-caliber firearm designed for competition, home defense, and range use. It features a short-recoil operating system and an integral handguard with M-LOK slots for accessory mounting. The package ships with an SB Tactical FS1913 brace, a MAGPUL MOE SL grip, and a MAGPUL 35-round PMAG 35 EV9 magazine. The Mongoose balances compact handling with a 5.8″ threaded barrel suitable for suppressed or unsuppressed configurations.

Key Specifications

• The barrel measures 5.8 inches and is threaded 1/2 x 28 for muzzle device and suppressor compatibility.
• The firearm is chambered in 9mm (9×19 mm Luger).
• The magazine capacity is 35 rounds using the included PMAG 35 EV9.
• The action uses a short-recoil operating system optimized for pistol-caliber operation.
• The stock/brace type is an SB Tactical FS1913 brace included with the firearm.
• The trigger installed is an ALG ACT Trigger for a crisp break.
• The safety is ambidextrous for left- and right-handed operation.
• The handguard features integral Picatinny top rail with M-LOK slots at 3, 6 and 9 o’clock for accessories.
• The listed finish is Anodized with an overall color of Black.
• The firearm weight is listed as 3.6 lb (increases with brace installed to the value specified by the manufacturer).

The NEMO OMEN MONGOOSE is a purpose-built compact 9mm platform that pairs low-recoil operation with modern accessory compatibility. Its threaded barrel and included end caps support both suppressed and unsuppressed use when paired with recommended devices, while the M-LOK handguard and full-length Picatinny rail provide mounting options for optics and lights. With an included 35-round magazine and ambidextrous controls, the Mongoose is a straightforward, feature-rich option for shooters seeking a compact pistol-caliber platform for competition, training, and range work.

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