Rock River Arms SOC1820.V1 | .458 SOCOM 16″ Carbine

The Rock River Arms SOC1820.V1 is a modern sporting carbine chambered in .458 SOCOM with a 16″ threaded bull barrel and a 6-position operator stock. It combines a forged LAR-15M lower and forged A4 upper with a 13″ free-float M-LOK handguard, RRA Beast Brake (5/8-32), low-profile gas block and a two-stage trigger for controlled, repeatable operation. For a capable optic under $1,000 that pairs well with this platform, consider the Vortex Strike Eagle 1-6×24 for fast target acquisition and usable magnification for the cartridge’s effective ranges.

Product Specifications

• The manufacturer is Rock River Arms.
• The model/part number is SOC1820.V1.
• The caliber is .458 SOCOM.
• The action type is Semi-Automatic.
• The barrel is described as 16 inches and is a threaded bull barrel.
• The rate of twist is 1:14″.
• The magazine capacity is 7 rounds.
• The magazine is detachable.
• The muzzle device is the RRA Beast Brake (5/8-32 thread).
• The handguard is a 13″ M-LOK free-float design.
• The stock is a 6-position RRA Operator synthetic stock in black.
• The grip is a Hogue rubber grip.
• The trigger is a two-stage ultra match trigger.
• The weight is listed as 7.6 lbs.
• The UPC is 842834102068.

This carbine is built for shooters who need a purpose-driven big-bore AR variant: the heavy-hitting .458 round with a 16″ barrel and a two-stage trigger supports deliberate, controlled shooting and offers a straightforward platform for brush hunting or heavy-bullet target work. The free-float M-LOK handguard and threaded bull barrel make it adaptable for accessories and muzzle devices, while the six-position stock and Hogue grip improve ergonomics for a range of shooters. Its configuration emphasizes practical function and modularity without unnecessary frills.