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ROCK RIVER ARMS (RRA) new 10.5 inch AR15 upper

Price: $670

• Condition: New
• Info & Pics: See below
• Notes: For pistol/SBR builds — NFA rules might apply.
• Caliber: 5.56 NATO / .223
• Upper Receiver: Forged A4
• Handguard: 9.5″ aluminum free-float Picatinny QUAD-RAIL with full-length Picatinny top rail, sling
• Barrel: 10.5″ chrome-lined chrome‑moly, 1:7 twist
• Barrel Material: 4150 chrome-moly vanadium steel
• Barrel Finish: Manganese phosphate
• Barrel Extension: M4
• Gas Block: Low-profile, detachable
• Gas Tube: Pistol-length
• Handguard Length: 9.5″
• Handguard Material: Aluminum
• Handguard Finish: Hardcoat anodized
• M4 bullet ramps: M4-style
• Gas System: Pistol‑length, low-profile gas block with PICATINNY RAILS ON TOP
• Muzzle Device: A2 flash hider, ½‑28 thread
• Includes: Bolt carrier group & charging handle
• Note: For pistol/SBR builds — NFA rules might apply.