Description
The SIG MCX Rattler LT is an ultra-compact, modular firearm designed for special operations and high-stakes personal defense. This “LT” version enhances the original Rattler’s design by making it fully compatible with the MCX Spear-LT ecosystem of barrels and handguards. Chambered in .300 Blackout, it utilizes a short-stroke gas piston system to deliver rifle-caliber power in a package that fits inside a standard backpack. Its 6.75-inch barrel is optimized for suppressing, featuring a 1:5 twist rate to stabilize heavy subsonic rounds and an adjustable gas regulator to ensure reliability across all ammunition types.
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Caliber: .300 AAC Blackout (optimized for subsonic and supersonic use).
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Barrel: 6.75-inch Cold Hammer Forged Steel with a 1:5 twist rate.
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Action: Semi-automatic short-stroke gas piston with adjustable gas system.
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Muzzle: SIG QD Clutch-Lok Tapered Flash Hider (suppressor-ready).
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Trigger: SIG Flat Blade Match Trigger (2-stage).
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Controls: Fully ambidextrous (bolt catch, release, safety, and charging handle).
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Length: 25.4 inches extended; 17.1 inches when folded.
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Weight: Approximately 5.1 lbs (Pistol configuration).


