Battle Arms Development WORKHORSE Upper .223-Remington 5.56-NATO 10.5 Barrel
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Battle Arms Development
Overview
The Battle Arms Development WORKHORSE Upper is a complete upper receiver designed for the AR-15 platform, featuring a 10.5-inch barrel optimized for both .223 Remington and 5.56 NATO ammunition. This configuration allows for a compact yet efficient build, making it suitable for close-quarters engagements while maintaining reliable ballistic performance. Commonly found in short-barreled rifles, this upper is a solid choice for builders looking to create a versatile firearm suited for tactical applications.
Specifications
Battle Arms Development WORKHORSE Upper .223-Remington 5.56-NATO 10.5 Barrel
August 2026 on GunPartPicker
Battle Arms Development WORKHORSE Upper .223-Remington 5.56-NATO 10.5 Barrel ranked #291 of the 690 upper receivers builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since June 2026. All time, it ranks #335 of the 1,553 upper receivers builders have added.
It was hard to find in August 2026, in stock on only 10 of the 17 days we checked, and today 3 of the 6 retailers we track have it in stock. The best price crept up from $447.97 to $524.95 over August 2026. Buying today, the lowest price is $447.97 at KY Gun Company, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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