Battle Arms Development WORKHORSE Complete Upper 5.56 10.5" M-LOK Handguard

The Battle Arms Development WORKHORSE Complete Upper is an AR-15 upper receiver chambered in 5.56x45mm NATO, built for sustained use and for builders who want a ready-to-run upper with an M-LOK handguard. The receiver is machined from forged 7075-T6 aluminum, and the barrel is 4150 chrome moly steel with a black nitride finish that resists corrosion.

The 10.5 inch barrel is threaded to accept a muzzle device. The free float M-LOK handguard has mounting slots at the 3, 6 and 9 o'clock positions, and a full length Picatinny rail runs along the top. The barrel is head spaced to a matching 9310 steel bolt and 8620 black nitride bolt carrier.

The package includes a BAD Rack-15 C ambidextrous charging handle and an AR-15/M16 bolt carrier group. It is designed to fit a compatible AR-15 lower.

• Caliber: 5.56x45mm NATO
• Barrel Length: 10.5 inches
• Barrel Material: 4150 Chrome Moly Steel with Black Nitride finish
• Receiver Material: 7075-T6 Aluminum
• Handguard: M-LOK free float
• Threaded Barrel: Yes
• Color: Black
• Includes: BAD Rack-15 C ambidextrous charging handle, AR-15/M16 bolt carrier group