The Rock River Arms LAR-8 X-1 delivers precision and versatility in a robust .308 Winchester platform designed for serious applications. This rifle combines proven AR-10 ergonomics with enhanced features that set it apart from standard large-frame rifles.
What Makes This Different
The X-1 configuration incorporates Rock River Arms' refined gas system and match-grade components that deliver consistent sub-MOA accuracy potential. Unlike basic .308 rifles, this platform features a free-floating handguard system and precision-machined upper receiver that maintains zero under demanding conditions. The 6-position collapsible stock provides length-of-pull adjustment from 10.75" to 14.25", accommodating various shooting positions and gear configurations.
Key Features
- Free-floating aluminum handguard with M-LOK attachment points
- Match-grade two-stage trigger with 4.5-6 lb pull weight
- Forged 7075-T6 aluminum upper and lower receivers
- Chrome-lined barrel with 1:10 twist rate for heavy bullet stability
- Low-profile gas block with adjustable gas regulation
- Magpul MOE stock with storage compartment and rubber buttpad
- Compatible with SR-25 pattern magazines and DPMS accessories
Field performance demonstrates reliable cycling with both 147-grain FMJ and 175-grain match ammunition across temperature ranges from -20°F to 120°F. The adjustable gas system allows optimization for suppressed shooting or adverse conditions without compromising reliability. Competition shooters report consistent 1.5 MOA groups at 100 yards with quality ammunition, while the robust construction handles extended firing schedules without accuracy degradation.
Technical Specs
- Caliber: .308 Winchester/7.62x51 NATO
- Overall length: 36.25" - 40.25" (stock extended)
- Barrel length: 18" with 1:10 twist rate
- Weight: 8.9 lbs unloaded
- Magazine capacity: 20 rounds (accepts SR-25 pattern magazines)
- Finish: Type III hard coat anodized black
- Manufactured in Colona, Illinois, USA
This configuration represents a significant investment in long-range capability and operational flexibility. Current production models feature updated manufacturing processes that ensure consistent quality and reliability standards expected from Rock River Arms platforms.