The Sig Sauer MCX Spear LT delivers proven piston-driven reliability in the versatile 7.62x39mm cartridge, combining modern engineering with battle-tested performance. This 16-inch barrel configuration provides optimal velocity while maintaining maneuverability in close quarters.
What Makes This Different
Built on Sig's advanced MCX platform, this rifle features a short-stroke piston system that runs cleaner and cooler than direct impingement alternatives. The adjustable gas block allows fine-tuning for various ammunition weights and suppressor use. The monolithic upper receiver provides a rigid platform for optics while the free-floating handguard ensures consistent accuracy shot after shot.
Key Features
- Short-stroke piston operating system for enhanced reliability and reduced fouling
- 16-inch cold hammer forged barrel with 1:10 twist rate optimized for 7.62x39mm
- Adjustable gas block with suppressor and unsuppressed settings
- Folding stock reduces overall length to 25.5 inches for transport and storage
- M-LOK compatible handguard with full-length top rail for accessories
- Rocksett-secured QD suppressor-ready flash hider
- 28-round polymer magazine included with rifle
Field performance centers on the 7.62x39mm cartridge's proven terminal ballistics and moderate recoil characteristics. The piston system maintains function in adverse conditions where fouling might compromise other operating systems. Accuracy potential reaches 2-3 MOA with quality ammunition, suitable for hunting medium game at moderate ranges or tactical applications requiring reliable function.
Technical Specs
- Caliber: 7.62x39mm
- Barrel Length: 16 inches, cold hammer forged
- Overall Length: 35.5 inches extended, 25.5 inches folded
- Weight: Approximately 7.9 pounds
- Capacity: 28+1 rounds
- Finish: Coyote Tan anodized aluminum
- Operating System: Short-stroke piston
- Stock: Side-folding, adjustable length of pull
- Handguard: M-LOK compatible aluminum
- Muzzle Device: QD suppressor-ready flash hider
- Manufacturer: Sig Sauer, USA
The MCX Spear LT represents Sig Sauer's commitment to modular design and operational flexibility in a proven cartridge. Professional users and serious enthusiasts recognize the platform's adaptability and the 7.62x39mm's effectiveness across multiple roles.