Battle Arms Development BAD WORKHORSE 10.5in 5.56 Black

The WORKHORSE complete upper from Battle Arms Development is built around a forged 7075-T6 aircraft-grade aluminum receiver and a free-float M-LOK handguard with attachment points at 3, 6, and 9 o’clock. It ships with a 4150 chrome-moly steel barrel finished with black nitride and is chambered in .223 Rem/5.56 NATO. The upper includes a full-length Picatinny rail with the manufacturer’s signature notch cut to align with the receiver, and it is supplied with a matching 9310 steel bolt and 8620 black nitride carrier.

Key Specifications

• The caliber is .223 Rem/5.56 NATO.
• The barrel length is 10.5 inches.
• The barrel material/finish is 4150 chrome-moly steel with black nitride.
• The receiver material is 7075-T6 forged aluminum.
• The handguard is a free-float M-LOK design with a full-length Picatinny rail at 12 o’clock.
• The bolt and carrier are a 9310 steel bolt and 8620 carrier with black nitride treatment.
• Includes Bad Rack-15 C charging handle and AR15/M16 bolt carrier group.
• The finish/color is Black.
• The upper is designed to fit AR-15 platforms.

Built as a ready-to-install complete upper, the WORKHORSE pairs durable materials and practical features to simplify assembly and deliver reliable operation in compact AR configurations. Its free-float M-LOK handguard and full-length top rail provide flexible accessory mounting, while the matched bolt and carrier with a nitride finish aid long-term serviceability. This upper is a straightforward choice for shooters assembling a compact, performance-oriented AR platform for range, duty, or general-purpose use.