Shipping to California
- Status: Complete upper with a barrel. Not a serialized firearm, but we ship it to a licensed dealer only.
- Delivery: Ships to WBT in La Mesa or to the California gun store you choose; select your dealer at checkout. Not shipped to home addresses.
- Learn more: Featureless or fixed magazine: which fits your build · FAQ
About this upper
One Horse 5.56 NATO Complete Upper Receiver W/ Medium Pistol Barrel for AR-15 is an upper receiver.
Manufacturer details
Build a compact and highly maneuverable AR platform with this 5.56 NATO complete upper receiver, engineered for reliability, fast handling, and consistent performance in tight spaces. Fully assembled and ready to install, this upper is ideal for AR pistol or SBR configurations.
At the core is a 5.56 NATO barrel paired with a pistol-length gas system, delivering reliable cycling in a compact format. This setup is optimized for shorter builds where responsiveness and maneuverability matter most.
The 7" M-LOK free-float handguard enhances barrel stability for improved accuracy while maintaining a slim, lightweight profile. Its modular design allows for easy attachment of lights, grips, and other accessories without adding unnecessary bulk.
A nitride bolt carrier group ensures smooth, dependable cycling with added corrosion resistance and long-term durability. The full-length Picatinny rail provides a solid mounting platform for optics and sights, making it easy to configure your setup.
Features
- ONE HORSE 5.56 NATO COMPLETE UPPER RECEIVER W/MEDIUM PISTOL BBL FOR AR-15
- Designed to pair with standard mil-spec AR-15 lowers, this complete upper is ready to pin on and run right out of the box.
- FEATURES
- 5.56 NATO Barrel – Compact design for close-quarters performance
Specifications
- Brand: One Horse LLC
- Fits: AR-15
- Manufacturer part #: OHCU03
- UPC: 850078799302
Buying from WBT Guns
- Delivery: Complete uppers ship to a licensed dealer only. Free pickup at our La Mesa store, or select the California gun store you want it sent to at checkout.
- Payment: Pay in full, put 50% down with the balance due in 14 days, or finance with Credova.
- Questions: Call (619) 667-9453 or email sales@wbtguns.com. FAQ
WBT Guns is family-owned in La Mesa, California, and has shipped parts and receivers to California buyers since 2012.
A note on accuracy. We work hard to keep every listing correct, but specifications, images and compliance details come from many sources and can contain errors or change without notice. Images may show a configuration that is not California-legal. If a detail on this page matters to your decision, call us and we will confirm it against the actual firearm before you order. The compliance information here is general in nature and is not legal advice; California and local laws change, and the configuration described is confirmed at the time of sale. All sales are subject to applicable federal, state and local law and to the buyer's eligibility to purchase.
