Sig MCX Rattler LT 6.75"

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 suppressed and unsuppressed use. The 1:5 twist barrel is optimized for heavy .300 Blackout projectiles, with subsonic loads best treated as a suppressed-use setup rather than a promise of reliable unsuppressed cycling. 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.

Despite its diminutive size, the Rattler LT is a serious compact .300 BLK host. It is sold as both a pistol and an SBR at the same MSRP; the two share barrel length and core MCX parts but are distinct configurations.