The Rock River Arms Assurance-C Carbine in 5.56x45mm NATO (brand part no. AR1900) is a semi-automatic AR-15 built with a 16-inch CMV barrel and a carbine-length gas system, giving shooters a reliable, ready-to-run rifle. Rock River Arms gives the barrel a 1:8 twist rate and mounts a Picatinny rail gas block, set at a height suited for iron sights, onto an RRA CAR lightweight quad-rail. The carbine wears an RRA Operator stock and a Hogue grip, both in black, and uses a selector-switch safety. It feeds from a detachable magazine with a 30+1 capacity and ships with a carrying case. Among AR-platform rifles in the AR rifles category, this carbine favors shooters who want a proven Rock River Arms carbine with a quad-rail handguard.

Key Specifications

• Chambered in 5.56x45mm NATO/.223 Rem with a 1:8-inch twist rate.
• Features a 16-inch CMV barrel with a carbine-length gas system.
• Includes an RRA CAR lightweight quad-rail handguard.
• Mounts a Picatinny rail gas block sized for iron sights.
• Wears an RRA Operator stock and Hogue grip.
• Uses a selector-switch safety.
• Feeds from a detachable magazine with a 30+1 capacity.
• Ships with a carrying case.
• Operates as a semi-automatic rifle.

Frequently Asked Questions

What handguard does this carbine use? An RRA CAR lightweight quad-rail.

Does this carbine include a case? Yes, a carrying case ships with the rifle.

Buy the Rock River Arms Assurance-C

A proven Rock River Arms carbine with a quad-rail handguard is exactly what this carbine delivers. As soon as it is ready to ship, order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.