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 16 Upper M-Lok 1-7 Twist 5.56 Nato

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

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: 100801044

Overview

Built for shooters who want a configurable AR-15 upper without bundled internals, this Battle Arms Development option leaves room to select a charging handle and bolt carrier group to match the rest of the build. It is offered in 10.5-inch and 16-inch versions and uses a carbine gas system, 5.56 NATO chamber, 1:7 twist, and an A2-profile barrel. The upper also includes an M-LOK handguard, low-profile gas block, and A2 flash hider, with a forged 7075 T6 receiver. It suits hunters and field users who want a straightforward upper assembly for a custom rifle setup.

Why Hunters Choose the Battle Arms Development Inc.

Available 10.5-inch

16-inch configurations for build flexibility

Sold Without

Charging handle or bolt carrier

Chambered 5.56

A 1:7 twist rate

Carbine Gas

System and low-profile gas block

Includes A2

Flash hider and M-Lok handguard

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 with M-Lok handguard

Best Used For

  • Shooters building a customized AR-15 upper without a charging handle or bolt carrier group.
  • Users wanting a 16-inch 5.56 NATO upper with a carbine gas system and M-LOK setup.
  • Builders who prefer a forged 7075-T6 receiver and low-profile gas block configuration.
  • Hunters or range users selecting a WORKHORSE upper in a straightforward, configurable package.

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 build flexibility.
  • Sold without a charging handle or bolt carrier group for user customization.
  • Chambered in 5.56 NATO with a 1:7 twist rate.
  • Features a carbine gas system and low-profile gas block.
  • Includes an A2 flash hider and M-Lok handguard interface.
  • Built with a forged 7075-T6 receiver and 4150 chrome-moly vanadium barrel.

Considerations & Trade-offs

  • Does not include a bolt carrier group or charging handle, so it is not a complete upper out of the box.
  • Offered in both 10.5" and 16" options, so buyers need to confirm which configuration matches their intended setup before ordering.
  • Uses a carbine gas system and low-profile gas block, which may matter for shooters planning specific accessory or handguard compatibility.
  • The barrel is nitrided and not chrome lined, which is a meaningful specification choice for buyers who prioritize a particular barrel finish setup.

Suggested Comparisons

  • AR-15 complete upper receivers
  • AR-15 upper receiver assemblies without BCG or charging handle
  • AR-15 barrels and barrel assemblies
  • AR-15 build components

Suggested Accessories

  • Charging handle
  • Bolt carrier group
  • Magazines
  • Optic mount

Frequently Asked Questions

Does this upper 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 product?

The source data lists two options: 10.5 inch and 16 inch.

What chambering and twist rate are specified?

The upper is listed in 5.56 NATO with a 1:7 twist rate.

What are the key barrel and gas system specifications provided?

The listed barrel profile is A2, the barrel steel is 4150 Chrome-Moly Vanadium, the finish is Nitride, chrome lining is not included, and the gas system is Carbine with a low-profile gas block and .750 diameter at the gas block.

What receiver material and muzzle setup are listed?

The receiver material is listed as forged 7075 T6, the muzzle thread is 1/2-28, and the muzzle device is an A2 Flash Hider.