Rock River Arms SOC0820V1 LAR-15M Complete Upper .458 SOCOM 16″

This Rock River Arms LAR-15M complete upper is built for use on AR-15 platform lowers chambered in .458 SOCOM. It features a 16-inch chrome moly bull barrel and a 13-inch lightweight aluminum free-float M-LOK handguard. The assembly ships with a bolt carrier group and charging handle for convenient installation.

Key Specifications

• The caliber is .458 SOCOM.
• The barrel measures 16 inches and is a bull profile.
• The barrel material is chrome moly.
• The handguard is a 13-inch lightweight aluminum free-float M-LOK rail.
• The muzzle device is a RRA Beast Brake (5/8x32).
• The upper receiver is forged A4.
• The product is supplied as a complete upper assembly.
• This upper includes a bolt carrier group and charging handle assembly.
• The handguard finish is Black.

Purpose-built components and a rugged barrel profile make this upper suitable for big-bore AR-15 applications where durability and reliable performance are priorities. The combination of a free-float M-LOK handguard and a threaded brake-equipped muzzle provides a practical, modular platform for shooters seeking a robust complete upper assembly.