Rock River Arms piston carbine pre-owned

Rock River Arms (RRA) AR-15 rifle chambered in 5.56x45mm NATO / .223 Remington. Known for their tight tolerances and precision manufacturing, this RRA platform has been upgraded with an Osprey Defense gas piston conversion system (carbine length), offering cooler, cleaner receiver operation and significantly reduced carbon fouling compared to traditional direct impingement setups.

This configuration pairs a 16″ carbine-length barrel with a rigid, full-length fixed stock (A2 style), delivering exceptional cheek weld, balance, and shot-to-shot stability. Built on forged 7075-T6 aluminum receivers with RRA’s renowned fit and finish, this rifle features a smooth trigger, flat-top Picatinny upper receiver ready for your choice of optics, and the reliability of a piston-driven action.

Condition:

• Overall Grade: Very Good

• Action: Smooth cycling; piston mechanism and bolt group operate crisp and clean.

• Bore: Bright and clean with sharp, distinct rifling.

• Cosmetics: Light cosmetic handling marks consistent with normal pre-owned use. Minor brass deflect/charging handle finish wear, but overall finish remains clean across both upper and lower receivers.

Specifications & Included Items:

• Caliber: 5.56x45mm NATO / .223 Rem

• Barrel: 16″ Carbine-Length (Threaded 1/2×28 w/ A2 Flash Hider)

• Gas System: Osprey Defense Drop-In Gas Piston System (Carbine Length)

• Stock: Fixed A2 Style Stock

• Receivers: Forged 7075-T6 Aluminum (Flat-Top Upper)

• Handguard: Drop-in Carbine Handguard

(Please inspect all high-resolution photos prior to purchase. The rifle shown in the pictures is the exact item you will receive.)