The One Horse LLC AR-15 complete upper is chambered in 5.56 NATO with a 7.5-inch barrel and a 1-in-7 twist (brand part no. OHCU03). It is sold as a complete upper only, with no lower receiver included, and it includes the bolt carrier group and charging handle. It fits standard mil-spec AR-15 lower receivers. One Horse offers the same 5.56 NATO chambering at other barrel lengths in this lineup.

Key Specifications

• The chambering is 5.56 NATO.
• The barrel is 7.5 inches long, compact for a pistol or short-barreled build.
• The twist rate is 1-in-7, suited to heavier 5.56 bullets.
• It is sold as a complete upper, with no lower included.
• It includes the bolt carrier group as part of the complete assembly.
• It includes the charging handle as part of the complete assembly.
• It fits standard mil-spec AR-15 lower receivers.
• It is cataloged by One Horse in its OH-CU complete-upper model line.
• The same 5.56 NATO chambering is offered in other barrel lengths within the One Horse lineup.

Frequently Asked Questions

What lower receivers does this upper fit? It fits standard mil-spec AR-15 lower receivers.

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

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

Buy the One Horse AR-15 Complete Upper, 7.5-Inch, 5.56 NATO

A complete short upper is the quickest route to a compact AR-15 pistol build, since the bolt and charging handle arrive installed. Order it from our Lubbock, Texas gun shop for fast direct shipping, and see more AR15 uppers.