Rock River Arms LAR-15M X-1 223 Wylde 18" 20+1 Semi-Auto Rifle

The Rock River Arms LAR-15M X-1 is a semi-automatic AR-platform rifle built around the 223 Wylde chamber, a hybrid throat that safely and accurately fires both .223 Remington and 5.56mm NATO ammunition. Part of Rock River Arms' X-Series custom line and made in the USA, the LAR-15M pairs an 18" fluted stainless steel barrel with a 1:8" twist to stabilize a wide range of bullet weights, and the threaded muzzle is fitted with RRA's Hunter Muzzle Brake for recoil mitigation.

Built on the standard AR-15 platform with a lightweight aluminum receiver finished in black, the rifle ships with no iron sights installed, leaving the upper optics-ready for a scope or red dot of the shooter's choice. Trigger pull is handled by RRA's Two Stage Match trigger, and the selector is RRA's signature Star safety.

At the rear, the LAR-15M X-1 uses the classic RRA Operator A2 fixed stock paired with a Hogue pistol grip, giving the rifle a familiar mil-spec handling profile. Overall length is 36" and the package weighs 7.70 lbs. Magazine capacity is 20+1 in the standard AR-15 pattern, and this right-hand rifle ships in a carrying case for transport and storage.

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