One Horse Express 22 | .22 LR | 16" | Atrius FRS | MLOK | 25rd AR-15 Rifle

The One Horse Express 22 Rifle (MPN: TT02) is a dedicated .22 LR AR-pattern rifle built around the Atrius Forced Reset Selector and a rimfire-specific operating system. Rather than using a centerfire conversion kit, the Express 22 is configured as a complete factory firearm with its barrel, bolt system, lower receiver, and selector interface set up specifically for .22 LR.

One Horse equips the rifle with a 16-inch medium-profile barrel, 1:12 twist, 1/2x28 muzzle threads, and a thread protector. The controls remain familiar to AR-platform shooters, while the THRiL RTG grip and 25-round magazine support the full-size training and range-use format. The Atrius single-side FRS provides the selector system around which the Express line is factory configured and tested.

Key Features & Capabilities

• Dedicated .22 LR System: Purpose-built rimfire operating components instead of a centerfire conversion.
• 16-Inch Threaded Barrel: 1:12 twist with 1/2x28 muzzle threads and thread protector.
• Atrius FRS Equipped: Factory-installed selector integrated into the complete firearm.
• AR-Pattern Controls: Familiar manual of arms for training and recreational shooting.
• 25-Round Magazine: Factory rimfire magazine supports extended range sessions.

The TT02 is a strong fit for shooters who want AR-style handling with lower-cost rimfire ammunition in a factory-configured platform. Browse AR-style rifles or shop .22 LR ammunition.