Description
The SIG SAUER MCX-SPEAR LT IR 300 BLK 9″ SBR Direct is a factory-configured short-barreled rifle designed for suppressed use. Built by SIG SAUER, it features a durable hard-coat anodized aluminum upper and lower receiver set. This model stands out with its integrated folding stock, ambidextrous controls, and a factory-installed 9-inch cold hammer-forged barrel optimized for 300 Blackout subsonic ammunition. It comes direct from SIG with the necessary NFA compliance.
Key Features
- Factory SBR configuration with SIG’s proprietary 9″ 1:5 twist cold hammer-forged barrel.
- Integrated folding and collapsible SIG minimalist stock for compact transport.
- Fully ambidextrous controls including safety selector, magazine release, and bolt catch.
- Patented short-stroke gas piston system for reliable suppressed operation.
- Includes M-LOK compatible handguard and a single-stage match-grade trigger.
Specifications
| Caliber / Type | 300 AAC Blackout / SBR |
|---|---|
| Material | 7075-T6 Aluminum |
| Finish | Hard Coat Anodized |
| Compatibility | MCX/SPEAR LT platform accessories |
| Weight | Approx. 6.2 lbs |
The 1:5 twist rate of the 9-inch barrel is engineered specifically for 300 Blackout, stabilizing heavy subsonic projectiles (190-220+ grain) essential for suppressed shooting. The short-stroke piston system reduces fouling and heat transfer to the action, enhancing reliability with a suppressor attached. This configuration provides optimal ballistic performance from a compact package, making it a dedicated tool for close-quarters and low-signature applications.
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