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Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver WH556-UA-16-223-BLK Caliber: 5.56x45mm NATO, Overall Length: 24.5 in, $32.00 Off w/ Free S&H

Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver, Assembly No Bcg No Ch, WH-UR-16-556
Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver, Assembly No Bcg No Ch, WH-UR-16-556
Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver, Assembly No Bcg No Ch, WH-UR-16-556
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Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver, Assembly No Bcg No Ch, WH-UR-16-556
Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver, Assembly No Bcg No Ch, WH-UR-16-556
2 of 2 images
Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver, Assembly No Bcg No Ch, WH-UR-16-556

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Questions & Answers
Caliber:
5.56x45mm NATO
Overall Length:
24.5 in
Barrel Length:
16 in
Barrel Profile:
A2
Gas System Length:
Mid Length
Barrel Twist Rate:
1-7
Firearms Threads Per Inch:
1/2x28
Handguard Type:
Free-Float
Muzzle Device:
A2 Flash Hider
Finish:
Nitride
Gas Block Journal Size-Diameter:
.750 in
Handguard Length:
15 in

Code: 2OS-UFH-BARDE10-WH556-UA-16-223-BLK

MPN: WH556-UA-16-223-BLK

UPC: 810033784095

List: $556.95Save $32.00
$524.95

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver

Barrel: Rosco Manufacturing 16in 4150V Chrome Moly Vanadium steel barrel, chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a Mid-length gas system. The barrel is finished with a .750" diameter low-profile gas block, WORKHORSE 15in M-Lok Free Float Rail, and an A2 flash hider.image

Upper: Forged 7075-T6 AR upper is hard coat anodized black for durability. Featuring M4 feed ramp cuts, these upper receivers are made in specialized factories.

This Upper Does Not Include BCG or Charging Handle

Specifications for Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver:

Manufacturer: Battle Arms Development
Caliber: 5.56x45mm NATO
Overall Length: 24.5 in
Barrel Length: 16 in
Barrel Profile: A2
Gas System Length: Mid Length
Barrel Twist Rate: 1-7
Firearms Threads Per Inch: 1/2x28
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Finish: Nitride
Fabric/Material: 4150 Chrome-Moly Vanadium Steel
Gas Block Journal Size-Diameter: .750 in
Handguard Length: 15 in
Gun Rail: M-LOK
Bolt Carrier Group Included: No
Charging Handle Included: No
Magazine Included: No

Package Contents:

  • Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver

Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver Orderable Models

List of Orderable Models

  • Battle Arms Development Workhorse 16in 5.56 Nato Upper Receiver, Assembly No Bcg No Ch, WH556-UA-16-223-BLK , MPN: WH556-UA-16-223-BLK , UPC: 810033784095 , Code: 2OS-UFH-BARDE10-WH556-UA-16-223-BLK
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Last updated 2026-08-01 UTC.