Battle Arms Development Workhorse Barreled AR-15 Upper Receiver - M-LOK - 16"

Manufactured by Battle Arms Development
SKU: WH-UR-16-556
MPN: WH-UR-16-556
Manufactured by Battle Arms Development
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Standard orders will ship out 2 business days if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



The Battle Arms Development Workhorse AR-15 Barreled Upper Receiver is made from premium materials with exceptional quality control to ensure you get a long lasting product for your project rifle. This AR upper receiver is forged from 7075-T6 aluminum with a Mil-Spec anodized coating. The Workhorse line of upper receivers come with a Rosco Manufacturing barrel made from 4150 Chrome Moly Vanadium steel with a Nitride finish and a mid-length gas system and an A2 flash hider. Also included is the BAD Workhorse 15" free float handguard with M-LOK slots for attaching accessories. If you are looking to build a bomb-proof rifle, you cant go wrong with attaching this barreled upper receiver group to your lower.

  • 16" Rosco Barrel chambered in 5.56 NATO
  • Nitride finish
  • Mid-Length gas system with .750" gas block
  • 1:7 twist rate
  • A2 flash hider with 1/2x28 threads
  • Forged 7075-T6 aluminum upper
  • Mil-Spec anodized finish
  • 15" Free float M-LOK handguard
  • No BCG or charging handle
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AssemblyBarreled Assemblies
Barrel CoatingSalt Bath Nitride
Barrel ContourGovernment
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandBattle Arms Development
Caliber Gauge5.56 NATO
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard15 in M-LOK Rail
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7

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