Sig Sauer Mcx Rattler Short Barrel Rifle 5.56 NATO 7.75 in 30 Round

The Sig Sauer MCX Rattler SBR in 5.56 NATO brings the MCX family's modular, mission-focused design into a compact short-barrel rifle platform ideal for close-quarters, tactical training, and duty use; the Rattler LT series builds on the original MCX-Rattler with fully ambidextrous controls, an ambidextrous bolt catch/bolt release, an adjustable short-stroke gas piston for suppressed and unsuppressed operation, and the SIG SLX/SLH suppressor-ready flash hider paired with a flat-blade 2-stage match trigger for controllable follow-up shots. The carbine offers cold hammer-forged carbon steel barrels in ultra-compact 6.75-inch or 7.75-inch profiles, a PDW-style grip, aluminum stock components, a 1:7 twist optimized for heavier 5.56 bullets, M1913 accessory rail for optics and lights, and full compatibility with MCX LT barrels and handguards for fast caliber or length changes on the AR-15-type platform. Classified as an NFA SBR, this semi-auto short-barrel rifle ships with the operating reliability of a piston system and a user-focused layout developed for special operations, patrol, home defense, and precision short-range engagements where size, modularity, and suppressor readiness matter.