Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 1Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 2Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 3Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 4Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 5Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 6Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 7Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 8Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 9Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 10Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 11Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 12Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 13Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 14Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 15Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 16Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 17Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 18Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 19Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 20Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 21Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 22Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 23Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 24Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 25Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 26Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 27Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 28Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 29Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 30Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 31Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 32Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 33Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 34Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black - View 35
Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black
Sig Sauer

Sig Sauer MCX Rattler 300 Blackout Pistol – 5.5″ Barrel, Folding Brace, Black

Shop the Sig Sauer MCX Rattler 300 Blackout pistol featuring a 5.5″ barrel, folding brace, M-LOK handguard, and piston-driven reliability. Compact, powerful, and built for performance.

SKU: 798681600182
Model: MCX Rattler
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Description

The Sig Sauer MCX Rattler in 300 Blackout delivers maximum firepower in the smallest possible package. Engineered for close-quarters performance, this ultra-compact piston-driven platform features a 5.5-inch barrel, full-length Picatinny top rail, and PDW-style folding brace.

The Rattler’s gas piston system is optimized for suppressed or unsuppressed use, providing exceptional reliability in any environment. Its minimalist design keeps the platform lightweight and maneuverable without sacrificing performance. This model comes equipped with a Magpul QD sling, a 20-round Lancer magazine, and a Sig three-prong flash hider.

Built on the proven MCX architecture, the Rattler is a favorite among professionals and enthusiasts looking for a compact, mission-ready firearm that can adapt to any scenario.

Specifications

Specification Detail
Manufacturer Sig Sauer
Model MCX Rattler
Caliber 300 AAC Blackout
Barrel Length 5.5"
Action Gas Piston, Semi-Auto
Brace Type Folding PDW Brace
Handguard M-LOK Compatible Aluminum
Receiver Finish Hardcoat Anodized Black
Trigger Single Stage
Muzzle Device Sig 3-Prong Flash Hider
Capacity 20+1
Magazine Type Lancer Polymer
Overall Length Approx. 23.5" (folded: ~16")
Weight Approx. 5.7 lbs
Included Accessories Magpul QD Sling, Lancer Magazine
Country of Origin USA
Product Highlights
Brand Sig Sauer
Model MCX Rattler
SKU 798681600182

Additional information

Manufacturer

Sig Sauer
Model

MCX Rattler

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