SIG SAUER MCX Spear-LT IR Semi-Auto Pistol – 5.56 NATO, 11.5″ Barrel, FDE Folding Brace, 30-Round
The SIG SAUER MCX Spear-LT IR is a premium semi-automatic pistol built on the latest generation of the renowned MCX platform. Chambered in 5.56 NATO, it features an 11.5-inch cold hammer-forged barrel and SIG’s proven short-stroke gas piston operating system for exceptional reliability, reduced fouling, and dependable performance in demanding conditions.
Designed with maximum versatility in mind, the MCX Spear-LT incorporates a lightweight free-floating M-LOK® handguard, fully ambidextrous controls, and a non-reciprocating side charging handle paired with a traditional rear charging handle. The pistol is finished in Flat Dark Earth (FDE) and equipped with a side-folding stabilizing brace, making it compact for transport while maintaining excellent handling characteristics.
Optics-ready with a full-length Picatinny top rail, the MCX Spear-LT accepts a wide range of red dots, LPVOs, and backup sights. Its modular design allows for easy caliber and barrel conversions within the MCX platform, making it one of the most adaptable modern sporting firearms available. The included 30-round magazine ensures ample capacity for recreational shooting and other lawful applications. (SigOptics)
Specifications
| Feature | Specification |
|---|---|
| Manufacturer | SIG SAUER |
| Model | MCX Spear-LT IR |
| Manufacturer Part Number | PMCX556N11BIR |
| Caliber | 5.56 NATO |
| Action | Semi-Automatic |
| Operating System | Short-Stroke Gas Piston |
| Barrel Length | 11.5 inches |
| Barrel | Cold Hammer Forged |
| Twist Rate | 1:7″ |
| Capacity | 30+1 Rounds |
| Magazine | 1 x 30-Round Magazine |
| Finish | Flat Dark Earth (FDE) |
| Brace | Side-Folding Stabilizing Brace |
| Handguard | Free-Floating M-LOK® |
| Receiver | Aluminum |
| Charging Handle | Ambidextrous Rear + Non-Reciprocating Side Charger |
| Controls | Fully Ambidextrous |
| Trigger | Flatblade Match Trigger |
| Sights | None (Optics Ready) |
| Optics Mount | Full-Length Picatinny Rail |
| Muzzle | Flash Hider |
| Overall Length | Approximately 29.75″ (Brace Extended) |
| Weight | Approximately 6.7 lbs |
| Intended Use | Sporting, recreational shooting, and lawful defensive applications where permitted. (WikiArms) |
Key Features
- Chambered in 5.56 NATO
- 11.5-inch cold hammer-forged barrel
- Proven short-stroke gas piston operating system
- Lightweight free-floating M-LOK® handguard
- Fully ambidextrous controls
- Side-folding stabilizing brace
- Flatblade match trigger
- Optics-ready Picatinny top rail
- Durable Flat Dark Earth (FDE) finish
- Includes 30-round magazine
- Modular MCX platform compatible with caliber and barrel conversions within the MCX system. (SigOptics)
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