The Battle Arms Development Bad 16 Uppr Workhorse 556 Ambi C Blk is a complete AR-15 upper receiver assembly built around a forged 7075-T6 aluminum WORKHORSE receiver and matching free-float M-Lok handguard. Its 16" 4150 chrome-moly vanadium nitride barrel is paired with an A2 flash hider and individually head-spaced bolt carrier group to deliver dependable accuracy and smooth cycling. A full-length Picatinny rail with the brand’s signature notch cut provides ample space for optics and accessories, while the included Bad Rack-15 C ambidextrous charging handle enhances usability for right- and left-handed shooters.

This upper is ideal for shooters looking to upgrade an existing AR-15 with a durable, ready-to-run top end that balances weight, rigidity, and accessory mounting options. The 15" WORKHORSE M-Lok free-float rail offers generous real estate for lights, grips, and sling mounts, making the assembly well suited for range use, training, and general-purpose rifle builds. Thoughtful engineering and consistent machining from Battle Arms Development result in a refined upper that reflects the manufacturer’s focus on reliability and practical innovation.

Key Features:

• Manufacturer: Battle Arms Development
• Model: Workhorse Complete Upper Receiver
• Caliber: .223 Wylde / 5.56 NATO
• Barrel Length: 16"
• Handguard: 15" Workhorse M-Lok Free-Float Rail
• Muzzle Device: A2 Flash Hider
• Bolt Carrier Group Included: Yes
• Charging Handle: Bad Rack-15 C Ambidextrous
• Receiver Material: Forged 7075-T6 Aluminum
• Gas System: Carbine Length
• Twist Rate: 1:8