Sig Sauer MCX Rattler SBR 5.56 NATO Black AR15 Semi Auto Rifle

The SIG Sauer MCX Rattler SBR is a compact, gas-operated semi-automatic rifle built on an AR-style platform with SIG’s MCX handling and quick-control feel. This configuration is chambered for 5.56 NATO / .223 Remington, built around a 5.5-inch barrel, and uses an M-LOK handguard for modular accessory mounting.

Key features

• 5.5-inch SBR length for compact carry and maneuverability
• 5.56 NATO / .223 Remington chambering for versatile ammunition compatibility
• M-LOK handguard for easy mounting of lights, grips, and accessories
• Includes a 30rd rifle magazine for immediate range use
• Optic-ready top mounting surface for adding the sighting system that fits your setup
• 1/2x28 threaded barrel for common .223/5.56 muzzle devices

Built for shooters who want a compact AR-style platform with serious capability, the MCX Rattler SBR is ready to be tailored to your preferred optics and accessories.