The Rock River Arms LAR-15M Tactical Carbine in .458 SOCOM (brand part no. SOC1264) is a semi-automatic AR-15 built around a 16-inch chrome moly bull barrel cut with a 1:14 twist for the heavy .458 SOCOM bullet, delivering 1.5 MOA accuracy at 100 yards while weighing only 7.8 pounds. Rock River Arms wraps the barrel in a lightweight M-LOK-compatible 15-inch free-float rail and adds a Hogue rubber pistol grip, an RRA Operator muzzle brake threaded 5/8×32, a six-position NSP2 stock, the company’s two-stage trigger, and an RRA winter trigger guard for gloved operation. Among AR-platform rifles in the AR rifles category, the LAR-15M Tactical Carbine favors shooters who want big-bore .458 SOCOM performance in an accurate, lightweight AR-15.

Key Specifications

• Chambered in .458 SOCOM.
• Operates as a semi-automatic AR-15.
• Built around a 16-inch chrome moly bull barrel with a 1:14 twist.
• Wrapped in a 15-inch M-LOK-compatible free-float rail.
• Fitted with a Hogue rubber pistol grip.
• Threaded with an RRA Operator muzzle brake (5/8×32).
• Adjusts on a six-position NSP2 stock.
• Runs Rock River Arms’ two-stage trigger with a winter trigger guard.
• Rated for 1.5 MOA accuracy at 100 yards.
• Weighs only 7.8 pounds.

Frequently Asked Questions

How accurate is this rifle? Rock River Arms rates it for 1.5 MOA accuracy at 100 yards.

How much does this rifle weigh? Only 7.8 pounds despite the bull barrel.

Buy the Rock River Arms LAR-15M Tactical Carbine .458 SOCOM

Big-bore .458 SOCOM performance in an accurate, lightweight AR-15 is exactly what the LAR-15M Tactical Carbine delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.