Rock River Arms Completed Upper Receiver A4 9MM Luger 16 Inch Barrel 1-10 Twist 1/2-36 Thread Free-Float Handguard Brake Black
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Rock River Arms
Overview
The Rock River Arms Completed Upper Receiver A4 for 9MM Luger features a 16-inch barrel with a 1:10 twist rate, optimizing stability and accuracy for this caliber. Designed for the AR-9 platform, this complete assembly includes a free-float handguard and a threaded barrel with a 1/2x36 pitch, allowing for easy installation of muzzle devices. This upper receiver is commonly found in builds focused on versatility and performance in competitive shooting or tactical applications.
Specifications
Rock River Arms Completed Upper Receiver A4 9MM Luger 16 Inch Barrel 1-10 Twist 1/2-36 Thread Free-Float Handguard Brake Black
Available Merchants(1)
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Price and stock
Today the one retailer we track is out of stock. Listed prices start at $629.99 at Optics Planet for when it comes back.
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