Sig Sauer
Lightweight 6.75" Rattler with aluminum construction
0-10 Scale Across 8 Axes
The Sig MCX Rattler LT was originally created to meet the demands of the U.S. Special Operations community for an ultra-compact personal defense weapon that doesn't compromise on capability. The 6.75-inch barrel configuration in .300 Blackout creates one of the most compact centerfire rifle platforms available at just 17.1 inches with the stock folded. The "LT" designation indicates this is the lighter, more modular evolution of the original Rattler, featuring compatibility with all MCX-Spear LT parts for easy barrel and handguard swaps.
The heart of the Rattler LT is its short-stroke gas piston system with adjustable gas settings for optimized performance with or without a suppressor. The 1:5 twist barrel is optimized for heavy subsonic .300 Blackout projectiles, making this platform exceptionally effective when suppressed. The cold-hammer-forged barrel maintains the quality standards of larger MCX variants while the free-floating M-LOK handguard provides mounting options despite the compact size. The two-stage match trigger, fully ambidextrous controls, and PDW-style upper receiver make this a complete package ready for serious use.
Despite its diminutive size, the Rattler LT is a serious fighting tool designed for special operations use. The adjustable gas system ensures reliable function across the full spectrum of .300 Blackout loads from supersonic defensive ammunition to subsonic suppressed rounds. The platform has been adopted by specialized units requiring maximum firepower in minimum space - from executive protection details to vehicle operators. At 5.1 pounds and 17.1 inches folded, the Rattler LT proves that extreme compactness doesn't require sacrificing Sig's legendary reliability and build quality.
Add optics, lights, and accessories to build your perfect Sig MCX Rattler LT 6.75".