The One Horse 5.56 NATO 16" Socom Carbine BBL Complete Upper Receiver is a purpose-built AR-15 upper designed for shooters who want a robust, mid-length system ready to drop onto a compatible lower. Featuring a 16-inch barrel and a full-length top rail, this upper offers a balanced profile for controlled handling and consistent performance with standard 5.56 NATO ammunition.

This complete upper receiver is ideal for range use, training, and general-purpose shooting where reliability and straightforward operation matter. The extended handguard provides generous space for mounting lights, grips, and other accessories, while the mid-length configuration helps maintain smooth recoil characteristics. Built with attention to fit and function, it reflects One Horse’s focus on practical design and dependable craftsmanship.

Key Features:

• Manufacturer: One Horse
• Model: 5.56 NATO 16" Socom Carbine BBL Complete Upper Receiver
• Caliber: 5.56 NATO
• Barrel Length: 16"
• Action: Semi-Automatic (Upper Receiver Assembly)
• Unique Features: Mid-Length Configuration, Full-Length Top Rail, Extended Handguard