Description
The SIG SAUER MCX-SPEAR in 6.8×51 SBR configuration is a next-generation short-barreled rifle built for advanced performance. This factory SBR features a durable 6.75-inch cold hammer-forged barrel with a SIG QD muzzle device, paired with a folding minimalist stock. Its patented gas piston system ensures reliable operation with the high-pressure 6.8x51mm (.277 FURY) cartridge, all housed within a lightweight, monolithic upper receiver for superior rigidity.
Key Features
- Factory SBR with 6.75″ cold hammer-forged barrel chambered in 6.8x51mm (.277 FURY)
- Patented short-stroke gas piston system for reliable high-pressure cartridge cycling
- Folding minimalist stock and ambidextrous controls for compact transport and handling
- Monolithic M-LOK aluminum handguard with full-length top Picatinny rail
- Two-stage match-grade trigger and QD sling attachment points included
Specifications
| Caliber / Type | 6.8x51mm (.277 FURY) / Short-Barreled Rifle (SBR) |
|---|---|
| Material | Aluminum Alloy Receiver, Steel Barrel |
| Finish | Anodized / Nitride |
| Compatibility | SIG MCX-SPEAR Platform |
| Weight | Approx. 7.5 lbs (unloaded) |
The 6.8x51mm cartridge, developed for the U.S. Army’s Next Generation Squad Weapon program, delivers superior ballistics from short barrels compared to legacy rounds. The MCX-SPEAR’s adjustable gas system is engineered to handle both standard-pressure and high-pressure hybrid case ammunition. This design provides sustained reliability and reduced recoil impulse, making it a capable platform for demanding tactical and precision applications where compact size and power are required.
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