Home / AR Pistols / Sig Sauer / Sig Sauer MCX Rattler .300 AAC Blackout 5.5 Barrel 30-Rounds Optics Ready
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Sig Sauer MCX Rattler .300 AAC Blackout 5.5 Barrel 30-Rounds Optics Ready
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$2,499.99
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Jun 28, 2026
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Specifications
Description
Sig Sauer MCX Rattler Features The MCX Rattler was originally designed at the request of the US Special Operations Command who needed a new Personal Defense Weapon (PDW) to replace the MP5. It features a groundbreaking design that takes largely based on the Sig Sauer renowned MCX modular rifle platform which utilizes a short-stroke recoil gas piston operating system. What separates the Sig Sauer MCX Rattler platform from other AR/M4 style rifles is the recoil system that totally eliminates the need for a buffertube making the MCX Rattler more compact than any AR/M4 rifle ever produced. In the place of a buffertube the MCX Rattler Pistol features a small picatinny rail allowing accessories such as folding rifle stock (NFA paperwork required) or folding pistol brace to be installed. Other features of the Sig MCX Rattler Pistol include a full length picatinny rail a free floating M-LOK handguard and a low-profile PDW pistol grip for enhanced ergonomics. Sig Sauer MCX Rattler Specifications Brand: Sig Sauer Category: Tactical Pistols Series: Rattler Caliber: 300 Blackout Model: MCX Capacity: 30+1 Action: Semi-Auto OAL: 23 Hand: Right Sights: Optic Ready Barrel Finish: Black Twist: 1:5 Gun Platform: AR-Style Grips: Black Polymer Handguards: M-LOK Free-Float Receiver Material: Aluminum Safety: Manual Thumb Thread Pattern: 5 / 8-24 tpi Barrel Description: Carbon Steel Barrel Length: 5.50 Max Capacity: 30 Receiver Finish: Black Weight: 5.10 lbs







