Rifle PartsBattle Arms Development Inc.Sold by Brownells

Battle Arms Development Inc.

Ar-15 Workhorse Upper Receivers- No Bcg Or Charging Handle - Ar-15 Workhorse 10.5 Upper M-Lok 1-7 Twist 5.56 Nato

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Battle Arms

Development WORKHORSE upper receiver set

Available 10.5-inch

16-inch options

Does Not

Include a charging handle or

Carbine Gas

A2 barrel profile

5.56 Nato

1:7 twist rate

$524.95
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SKU: 100801043

Overview

Built for shooters who want a configurable upper receiver set, this Battle Arms Development option is offered in 10.5-inch and 16-inch versions and arrives without a charging handle or bolt carrier group. It is chambered in 5.56 NATO and includes a carbine gas system, 1:7 twist, low-profile gas block, and A2 flash hider. The forged 7075 T6 receiver and nitride-finished 4150 chrome-moly vanadium barrel make it a practical foundation for a custom AR-15 setup. For hunters and outdoor users who prefer to choose their own internal components, it provides a straightforward starting point without unnecessary extras.

Why Hunters Choose the Battle Arms Development Inc.

Available 10.5-inch

16-inch configurations for different build

Does Not

Include a bolt carrier group

5.56 Nato

1:7 twist rate

Uses Carbine

A low-profile gas block

Built Forged

A forged 7075-T6 receiver and

Key Features

  • Battle Arms Development WORKHORSE upper receiver set
  • Available in 10.5-inch and 16-inch options
  • Does not include a charging handle or bolt carrier group
  • Carbine gas system with A2 barrel profile
  • 5.56 NATO chamber with 1:7 twist rate
  • Forged 7075-T6 receiver material
  • Includes M-Lok handguard and A2 flash hider

Best Used For

  • Hunters building a compact 10.5-inch AR setup for customized use
  • Shooters who want to choose their own bolt carrier group and charging handle
  • Users needing a 5.56 NATO upper with carbine gas and 1:7 twist
  • Builders looking for a forged 7075-T6 upper receiver platform
  • Those wanting an upper with M-Lok compatibility for accessory setup

Specifications

Barrel ExtensionM4
Barrel FinishNitride
Barrel Length10.5" and 16"
Barrel ProfileA2
Barrel Steel4150 Chrome-Moly Vanadium
Bolt Carrier Group IncludedNo
Chamber5.56 NATO
Charging Handle IncludedNo
Diameter At Gas Block.750
Gas Block TypeLow-profile
Gas SystemCarbine
M LokYes
Muzzle DeviceA2 Flash Hider
Muzzle Thread1/2-28
Receiver MaterialForged 7075 T6
Twist Rate1:7

Pros

  • Available in 10.5-inch and 16-inch configurations for different build needs.
  • Does not include a bolt carrier group or charging handle, allowing user customization.
  • Features a 5.56 NATO chamber with 1:7 twist rate.
  • Uses a carbine gas system with a low-profile gas block.
  • Built with a forged 7075-T6 receiver and 4150 chrome-moly vanadium barrel.
  • Includes an A2 flash hider and M-LOK handguard interface.

Considerations & Trade-offs

  • Does not include a bolt carrier group or charging handle, so it requires additional parts before the upper is ready to run.
  • The 10.5" barrel length is a compact setup, which may not suit buyers looking for a longer general-purpose upper.
  • The included A2 flash hider is fixed in the listed configuration, so users wanting a different muzzle setup will need to change components.
  • This is offered as a 10.5" or 16" option, so buyers need to confirm which length matches their build plan before ordering.

Suggested Comparisons

  • Complete upper receivers
  • AR-15 upper receiver assemblies
  • AR-15 pistol-length upper options
  • AR-15 carbine gas system uppers

Suggested Accessories

  • Charging handle
  • Bolt carrier group
  • Optic mount
  • Backup iron sights

Frequently Asked Questions

Does this upper receiver include a bolt carrier group or charging handle?

No. The WORKHORSE upper receiver set is sold without a charging handle or bolt carrier group, allowing the user to choose those components separately.

What barrel length options are listed for this upper?

The product is listed in both 10.5" and 16" options. The title provided here is for the 10.5" upper.

What chambering and twist rate does it use?

It is chambered in 5.56 NATO and listed with a 1:7 twist rate.

What gas system and gas block setup are specified?

The upper is listed with a carbine gas system and a low-profile gas block. The diameter at the gas block is .750.

What other listed features should I know before building around it?

The provided specs list an A2 barrel profile, 4150 Chrome-Moly Vanadium barrel steel, nitride finish, no chrome lining, 1/2-28 muzzle thread, M4 barrel extension, an A2 flash hider, and a forged 7075 T6 receiver material.