Product DescriptionThe Bushmaster M4 Patrolman&';s Upper is a complete AR-platform upper assembly built for shooters seeking a classic M4-style configuration with dependable performance. Chambered in 5.56x45mm NATO, it features a 16-inch black nitride barrel, a forged 7075-T6 aluminum A4 flat top receiver, and a carbine-length gas system for proven function. This upper is equipped with an M4-style handguard, A2 birdcage-type flash hider, and detachable carry handle, delivering a familiar patrol-style setup with durable construction and broad compatibility for AR-platform builds.Product Highlights Complete Bushmaster M4 Patrolman&';s upper chambered in 5.56x45mm NATO for AR-platform rifles. 16-inch black nitride barrel paired with a carbine-length gas system for reliable cycling and corrosion resistance. Forged 7075-T6 aluminum A4 flat top receiver offers strength with a durable black finish. Includes M4-style handguard, A2 front sight, detachable carry handle, and A2 birdcage-type flash hider. Patrol-inspired upper configuration designed for shooters who want a classic M4-style profile and handling. Specs Brand: Bushmaster Manufacturer Part Number: 0040004BLK UPC: 604206918222 Product Type: Complete Upper Model: M4 Patrolman&';s Upper Caliber: 5.56x45mm NATO Barrel Length: 16" Barrel Finish: Black Nitride Receiver Material: 7075-T6 Forged Aluminum Receiver Type: A4 Flat Top Receiver Finish: Black Gas System: Carbine Length Handguard: M4 Style Handguard Finish: Black Sights: A2 Front / Carry Handle Rear Flash Hider: A2 Birdcage Type Overall Length: 25" Twist Rate: 1:7 Weight: 5.175 lbs Country of Manufacture: USA Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.