SIG MCX- RATTLER LT 6.75" .300BLK SBR

The SIG SAUER MCX Rattler LT SBR in .300 Blackout is compact, configurable, and downright mean—built to run suppressed and stay nimble in close quarters. With its 6.75" cold hammer-forged barrel and short-stroke gas piston system, the Rattler LT is made to squeeze every bit of performance out of .300BLK while keeping recoil in check. It’s got all the bells and whistles you’d expect from SIG’s MCX platform—ambi controls, M-LOK handguard, folding stock—and it’s ready to ride in your truck, pack, or range bag. If you’re looking for a silencer-ready, fight-ready SBR that doesn’t waste space or energy, the Rattler LT .300BLK is it.

FEATURES AND BENEFITS OF THE MCX RATTLER:

• 6.75" Cold Hammer-Forged Barrel: Short and sweet, made for precision with .300 Blackout.
• Suppressor-Optimized Gas System: Adjustable short-stroke piston keeps things smooth and quiet.
• Fully Ambi Setup: Safety, mag release, bolt catch—all mirrored for any shooter.
• Modular & Mission-Ready: M-LOK handguard and folding, adjustable stock make it easy to kit out your way.
• Built to Run Quiet: Designed from the jump to pair perfectly with your favorite can.

TECHNICAL SPECIFICATIONS:

• Caliber: 300BLK
• Barrel Length: 6.75"
• Mags: (1) 30rd Polymer Mag
• Trigger: SIG Flatblade Match
• Twist: 1:5 in
• Overall Length: 24.9"
• Weight: 5.8 lb

WHAT'S IN THE BOX:

• Sig Sauer MCX Rattler-LT .300BLK SBR
• (1) 30rd Polymer Mag
• Owners Manual

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