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Battle Arms Development WORKHORSE
California Proposition 65 Warning

This product can expose you to chemicals including lead, known to cause cancer and birth defects. For more info visit P65Warnings.ca.gov.

Battle Arms Development

WORKHORSE

$724.95
$692.95
Sale Price
Low Stock (5 left) California compliant

Battle Arms Development WORKHORSE, Complete Upper Receiver, 5.56 NATO, 10.5" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Black, Includes Bad Rack-15 C Ambidextrous Charging Handle and AR15/M16 BCG WH-UR10.5B-Y-15C

Key Details
Brand Battle Arms Development
Manufacturer Part Number WH-UR10.5B-Y-15C
UPC 810033786129
SKU BAD-WH-UR10-5B-Y-15C
Current Stock 5 available
Quantity Updated Apr 26, 2026 2:25 PM
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Purchase Requirements
  • Final availability is confirmed at checkout.
In-Store Pickup Required: All firearm purchases must be picked up at our Beverly Hills location after background check completion.
Product Description

The WORKHORSE complete upper receiver is purpose-built around the forged WORKHORSE 7075-T6 aircraft-grade aluminum receiver and free-float rail handguard with M-LOK attachment point at 3, 6, and 9 o'clock positions. At 12 o'clock is a full-length Picatinny accessory rail with their signature notch cut matching the upper receiver. Every upper receiver is equipped with a 4150 chrome-moly steel black nitride barrel for durability and accuracy. The barrel is individually head-spaced with a matching 9310 steel bolt and 8620 black nitride carrier for ultimate reliability and ease of cleaning.

Features
  • 10.5 Barrel"
  • Bad Rack-15 C Ambidextrous Charging Handle
  • Nitride Finish, AR-15/M16 Bolt Carrier Group
  • Free Float M-LOK Handguard
  • Anodized Finish, Black
Specifications
UPC: 810033786129
Manufacturer: Battle Arms Development
Manufacturer Part #: WH-UR10.5B-Y-15C
Model: WORKHORSE
Barrel Length: 10.5"
Type: Upper