SIGMCX RATTLER 5.56 5IN CONCRETE RIFLE SEMI SBR

The SIG MCX Rattler compresses proven MCX reliability into an ultra‑compact 5″ barreled SBR designed for extreme maneuverability and rapid handling. Chambered in 5.56 NATO and finished in a durable Concrete/cerakote appearance, the Rattler delivers controllable recoil and fast follow‑ups from a minimal footprint — ideal for close‑quarters, vehicle crews, or any application where size matters. The package includes an optics‑ready top rail, compact M‑LOK handguard for short accessories, and a threaded muzzle for brakes or short devices. Ergonomic controls and an ambidextrous layout make manipulation quick and intuitive. Note configuration specifics (brace/stock type, included magazine capacity) in your listing — features and included accessories vary by SKU.