Rock River Arms CMP Coyote CAR A4 Upper .300 Blackout 16" – AR-15 Platform

The Rock River Arms CMP Coyote CAR A4 Upper in .300 Blackout features a 16-inch barrel configured for versatile performance with subsonic and supersonic loads. Chambered in .300 BLK, this complete upper receiver assembly is designed for standard AR-15 lower receivers and delivers reliable cycling across a wide range of ammunition weights. The A4 flat-top configuration provides a full-length Picatinny rail for optics mounting.

This upper is built with a forged aluminum receiver and includes a mid-length gas system for smooth operation with .300 Blackout's pressure characteristics. The Coyote Tan Cerakote finish provides corrosion resistance for field use. Arrives as a complete upper receiver group ready to install on your AR-15 lower—no additional assembly required. Note: .300 Blackout and 5.56 NATO magazines are interchangeable, but always verify barrel markings before loading to prevent dangerous chambering errors.

• Caliber: .300 Blackout
• Type: Complete Upper Receiver Assembly
• Compatible Lower: AR-15 / MILSPEC
• Barrel Length: 16 inches
• Material: Forged Aluminum Receiver
• Finish: Coyote Tan Cerakote
• Includes: Complete upper receiver group with bolt carrier group and charging handle
• Installation: Drop-in ready for AR-15 lowers, no gunsmithing required