Brand New Model -- Rock River Arms 458 Socom Tactical Carbine Upper Half with Light M-LOK Freefloat Handguard -- Item No. S0C0564

Compatible with any mil spec lower receiver half, not just Rock River.

Beast Brake upgrade!

Includes the bolt carrier group and charge handle.

Rock River Arms Lightweight Free Float Rail, 15 inch extended, M-LOK compatible

16 inch Chrome Moly Bull Barrel with 1:14 twist

Low Profile Gas Block

Rock River Operator Brake / 5/8-32 thread

A layaway plan is also available.