The One Horse AR15 Complete Upper (brand part no. OH-CU03) is a complete AR-15 upper chambered in 5.56 NATO with a 7.5-inch barrel and a 1-in-7 twist rate. It’s sold as a complete upper only, with no lower receiver included.

Key Specifications

• Sold as a complete upper, with no lower included.
• Barrel measures 7.5 inches.
• Chambered in 5.56 NATO.
• Uses a 1-in-7 twist rate.
• Includes the bolt carrier group and charging handle as part of the complete assembly.
• Fits standard mil-spec AR-15 lower receivers.
• Cataloged by One Horse under its OH-CU complete-upper model line.
• One Horse offers the same 5.56 NATO chambering at other barrel lengths within this lineup.

Frequently Asked Questions

Is this short-barreled upper itself an NFA item? No, it’s sold as a complete upper only. Barrel length restrictions only come into play if it’s paired with a shoulder-stocked lower under 16 inches overall, which requires ATF registration first.

Does this include a lower receiver? No, this is a complete upper only; the lower receiver is sold separately.

What twist rate does this upper use? 1-in-7.

Buy the One Horse Complete Upper, 7.5in, 5.56 NATO

Order the One Horse AR15 Complete Upper through our One Horse lineup at Schaefer Defense, a Lubbock, TX gun shop, along with more AR15 uppers.