Sig Sauer MCX-SPEAR LT 7.62x39mm SBR 11″ Barrel – 28 Rd
Step into the evolution of modern rifle technology with the SIG SAUER MCX-SPEAR-LT 7.62×39 SBR (Short-Barreled Rifle). Built upon the battle-tested legacy of the MCX Virtus, the MCX-SPEAR-LT represents SIG SAUER’s commitment to precision engineering, ergonomic refinement, and modular versatility. Purpose-built for tactical operators, professional end-users, and competitive shooters, this compact NFA SBR delivers devastating 7.62×39 firepower in an agile, lightweight, and mission-adaptable package.
Featuring an 11.5-inch carbon steel barrel housed within a lightened alloy M-LOK handguard, the MCX-SPEAR-LT balances effortless maneuverability with unyielding structural strength. Complete with fully ambidextrous operational controls (including a bolt catch and release), a crisp SIG Flatblade Match Trigger, a 2-position adjustable gas system, and a side-folding Minimalist Plus stock, this rifle provides flawless handling for both left- and right-handed shooters. Finished in SIG’s signature Coyote Cerakote and topped with a Rocksett® QD suppressor-ready flash hider, the MCX-SPEAR-LT sets the benchmark for modern short-barreled rifle performance.
Features
Short-Stroke Gas Piston Operating System:Delivers legendary reliability, reduced fouling, and smooth recoil management across all ammunition types, supported by a 2-position adjustable gas block for suppressed or unsuppressed shooting.
Lightweight Ergonomic Alloy Handguard:Reduces front-end weight for improved point-of-aim control and fast target transitions while offering rigid M-LOK attachment slots for lights, lasers, and foregrips.
Fully Ambidextrous Operational Controls:Equipped with dual-sided safety selectors, magazine releases, and an integrated ambidextrous bolt catch and release for fluid, intuitive weapon manipulation under stress.
SIG Flatblade Match Trigger:Delivers a crisp, lightweight, and repeatable trigger break that maximizes practical accuracy and rapid follow-up shots in close quarters or at range.
SIG QD Suppressor-Ready Flash Hider:Factory-installed and treated with Rocksett®, providing effective muzzle flash reduction while serving as a direct mounting interface for SIG QD suppressors.
Folding Minimalist Plus Stock:Side-folding stock mechanism drastically reduces overall storage profile and transport footprint without sacrificing cheek-weld or shoulder stability.
Specifications
| Manufacturer | SIG SAUER |
| Model | MCX-SPEAR-LT SBR |
| SKU | RMCX-762R-11B-LT-SBR |
| Firearm Type | Class 3 NFA Short-Barreled Rifle (SBR) |
| Caliber | 7.62x39mm |
| Operating System | Short-Stroke Gas Piston (Adjustable Gas System) |
| Action Type | Semi-Automatic |
| Barrel Length & Material | 11.5 Inches (292.1 mm) / Carbon Steel |
| Twist Rate | 1:9.5 |
| Muzzle Thread Pitch | 5/8×24 (SIG QD Suppressor-Ready Flash Hider) |
| Receiver Finish | Coyote Anodized / Cerakote |
| Stock Type | Folding Minimalist Plus Stock |
| Trigger Type & Shape | SIG Flatblade Match Trigger (Flat) |
| Forend / Accessory Rail | Alloy Handguard with M-LOK Attachment Points |
| Grip Type | Polymer SIG Grip |
| Magazine Included | (1) 28-Round Steel AR-15 7.62×39 Magazine |
| Overall Dimensions | 29.8″ L x 2.9″ W x 7.5″ H |
| Weight | 7.0 lbs (3.18 kg) |
| Forward Assist | Yes |
