Battle Arms Development Workhorse Complete Upper Receiver for AR-15 – 5.56 NATO, 16 Inch Barrel, Includes BCG (WH-UR16B-Y-15)

• Complete upper receiver for AR15 rifles chambered in 556 NATO with 16 inch barrel
• Includes bolt carrier group and ambidextrous charging handle for full operation
• Equipped with free float M LOK handguard for modular accessory attachment
• Barrel constructed from 4150 chrome moly steel with nitride finish
• Full length Picatinny top rail supports optics and sight mounting
• Designed for compatibility with standard AR15 lower receiver assemblies

The Battle Arms Development Workhorse Complete Upper Receiver is an upper receiver designed for AR-15 rifles chambered in 5.56 NATO. This assembly includes a 16 inch barrel, a free-float M-LOK handguard, and comes equipped with a bolt carrier group and ambidextrous charging handle for complete functionality. It is designed to fit AR-15 lower receivers and functions as a complete upper assembly.

The Battle Arms Development Workhorse Complete Upper Receiver features a forged 7075 T6 aluminum receiver and a 4150 chrome-moly barrel with a nitride finish. It includes a 16 inch barrel, M-LOK handguard, AR15/M16 bolt carrier group, and Bad Rack-15 ambidextrous charging handle. This product is used for assembling AR-15 rifles and supports standard configurations for range use. In typical setups, it attaches directly to compatible AR-15 lower receivers and provides a complete upper assembly with included core components.