Battle Arms Development Workhorse 556 Upper 16in Black
Battle Arms Development Workhorse upper receiver assembly in 5.56 NATO with 16-inch barrel, mid-length gas system, and 15-inch M-LOK free float handguard. A2 flash hider included. Bolt carrier group and charging handle sold separately.
Battle Arms Development Workhorse Upper Receiver Assembly
The Workhorse upper receiver represents a thoughtful approach to modern rifle building. This complete upper assembly arrives ready for integration with your lower receiver, streamlining the build process for both experienced gunsmiths and first-time builders.
Key Features
- Caliber & Barrel: 5.56 NATO chambering with a 16-inch barrel—a proven length that balances velocity, handling, and versatility
- Gas System: Mid-length configuration provides reliable cycling across a wide range of ammunition while managing recoil impulse
- Handguard: 15-inch M-LOK free float design allows for precision mounting of accessories without interference to barrel harmonics
- Muzzle Device: A2 flash hider reduces visible signature and helps manage muzzle rise
- Finish: Hard anodized black coating provides corrosion resistance and a professional appearance
What You're Getting
This upper receiver assembly includes everything shown above. You will need to source a bolt carrier group and charging handle separately to complete your rifle.
The Workhorse Philosophy
Battle Arms Development engineered this upper with the working shooter in mind—reliable, straightforward, and built to perform across diverse shooting applications. Whether you're building a duty rifle, a practical competition platform, or a general-purpose carbine, the Workhorse delivers solid fundamentals without unnecessary complexity.
Features
- barrel length: 16in
- gas system: midlength
- barrel profile: a2
- barrel steel: 4150 chrome-moly vanadium
- barrel finish: nitride
- chrome lining: none
- muzzle thread: 1/2-28
- chamber: 5.56 nato
- twist rate: 1:7
- barrel extension: m4
- diameter at gas block: .750
- gas block type: low-profile
- muzzle device: a2 flash hider
- receiver material: forged 7075 t6
- receiver type: m4
- handguard type: workhorse 15in m-lok free float rail
- bolt carrier group included: no
- charging handle included: no
- overall length: 24.5in
