Rock River Arms SOC0820V1 LAR-15M CLB Complete Upper, 458 SOCOM 16″ Chome Moly Bull Barrel, Black, Aluminum Rec, 13″ M-LOK Handguard, Beast Brake, Fits AR-15

Overview

The Rock River Arms SOC0820V1 LAR-15M CLB Complete Upper is an AR-15 platform upper receiver assembly chambered in .458 SOCOM. Designed for applications requiring enhanced stopping power, such as hunting and tactical scenarios, this complete assembly pairs a forged A4 aluminum receiver with a 16-inch chrome moly steel bull barrel finished in black. The heavy bull barrel profile increases rigidity for tighter shot groups and features a 1:14 twist rate. Included with the assembly is a 13-inch lightweight aluminum free-float handguard featuring M-LOK compatibility for easy accessory mounting without adding unnecessary bulk. Muzzle management is handled by the integrated RRA Beast Brake with 5/8x32 threading, which helps mitigate recoil and muzzle rise for improved control. The unit also comes equipped with a low profile gas block, bolt carrier group, and charging handle assembly, making it ready for installation on standard AR-15 lower receivers.

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