Sig Sauer Sig Sauer MCX LTAW .300 BLK Folding Stock SBR 6.75" Barrel - 30 Rd

Sig Sauer Sig Sauer MCX LTAW .300 BLK Folding Stock SBR 6.75" Barrel - 30 Rd

Delivering battle-proven MCX reliability and elite close-quarters performance in a factory Short-Barreled Rifle configuration, the SIG Sauer MCX-LTAW .300 Blackout SBR (SKU: RMCX-300B-6B-LTAW-SBR) brings LVAW-inspired tactical innovation to the commercial and professional markets. Purpose-built around an ultra-compact 6.75-inch cold hammer-forged carbon steel barrel with a rapid 1:5" twist rate, this suppressed-ready platform effectively stabilizes heavy subsonic and high-velocity supersonic .300 BLK projectiles. The barrel comes pre-fitted with a direct-thread training tube over standard 5/8"-24 threads and is powered by a short-stroke gas piston operating system with a user-adjustable gas block.

Engineered for sustained thermal management during high volume-of-fire engagements, the SBR features an oversized alloy suppressor-compliant M-LOK® handguard containing an integrated full-length internal heat shield that shields the operator's support hand from barrel and suppressor heat. Designed for effortless deployment in tight vehicles and confined spaces, the rifle features a push-button folding skeletonized KM stock that reduces overall length to an ultra-compact 22.3 inches when collapsed. Outfitted with standard MCX LT fully ambidextrous controls, a two-stage match duo trigger with a curved bow, an MCX Legacy angled polymer grip, and a 30-round Magpul PMAG Gen M3 300 BLK magazine, the MCX-LTAW SBR delivers uncompromising short-barreled capability.

Features

6.75" CHF Barrel w/ 1:5" Twist & Training Tube:
Cold hammer-forged carbon steel barrel features a fast 1:5" twist rate engineered to fully stabilize subsonic .300 BLK loads, capped with a factory direct-thread training tube over 5/8"-24 threads.

LVAW-Inspired Suppressor Handguard w/ Heat Shield:
Oversized alloy M-LOK® handguard accommodates suppressed setups, lined with an integrated full-length thermal heat shield to prevent heat transfer during extended firing strings.

Folding Push-Button KM Skeleton Stock:
Equipped with a lightweight, skeletonized KM stock that unlocks via a single push-button, folding flush against the receiver to collapse length down to 22.3 inches for rapid transport.

Adjustable Short-Stroke Gas Piston System:
Proven MCX short-stroke gas piston operating system incorporates an adjustable gas block to fine-tune cycling across subsonic, supersonic, and suppressed ammunition.

Fully Ambidextrous MCX LT Controls:
Standard factory ambidextrous control scheme provides mirrored safety selectors, dual bolt catches/releases, magazine releases, and charging handles for fluid left- or right-handed manipulation.

Two-Stage Match Duo Trigger:
Factory-installed two-stage match trigger featuring a classic curved bow, delivering a crisp break and rapid tactile reset for improved precision and split times.

MCX Legacy Angled Grip & M-LOK® Modularity:
Fitted with the ergonomic MCX Legacy angled polymer grip and M-LOK attachment slots across the handguard for tactical light, laser, and foregrip mounting.

Specifications