One Horse AR15 Complete Upper, 16-inch, 5.56 NATO

The One Horse AR15 Complete Upper (brand part no. OH-CU01) is a complete AR-15 upper chambered in 5.56 NATO with a 16-inch barrel and a 1-in-8 twist rate. At 16 inches, it clears the federal minimum rifle barrel length, and it’s ready to attach to a compatible lower to complete a rifle build.

Key Specifications

• Sold as a complete upper, ready to attach to a compatible lower.
• Barrel measures 16 inches, clearing the federal minimum rifle barrel length.
• Chambered in 5.56 NATO.
• Uses a 1-in-8 twist rate.
• Includes the bolt carrier group and charging handle as part of the complete assembly.
• Legal to build as a rifle with no special paperwork at this barrel length.
• Fits standard mil-spec AR-15 lower receivers.
• Cataloged by One Horse under its OH-CU complete-upper model line.
• Manufactured by One Horse.

Frequently Asked Questions

Is this barrel legal without any special paperwork? Yes, at 16 inches it clears the federal minimum rifle barrel length, so no NFA registration is required.

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-8.

Buy the One Horse Complete Upper, 16in, 5.56 NATO

Order the One Horse AR15 Complete Upper through our One Horse lineup at Schaefer Defense and we will ship it fast, fully insured, from our Lubbock, TX gun shop, along with more AR15 uppers.