The Ruger American Rimfire® Model 8321 is a full-size .22 Winchester Magnum Rimfire (.22 WMR) bolt-action rifle engineered for varmint hunting, small-game hunting, and precision recreational shooting. Featuring a 22-inch cold hammer-forged barrel, 9-round rotary magazine, Williams™ fiber optic sights, interchangeable stock modules, and the Ruger Marksman Adjustable™ trigger, the 8321 delivers the increased velocity and energy of the .22 WMR cartridge in a lightweight, highly accurate platform.
Built on Ruger's proven American Rimfire platform, Model 8321 utilizes the Power Bedding® integral bedding block system, which positively locates the receiver while free-floating the barrel for enhanced accuracy and consistent shot placement. The Ruger Marksman Adjustable™ trigger offers a crisp, user-adjustable trigger pull, allowing shooters to tailor the rifle to their preference without compromising reliability.
The rifle features a 22-inch cold hammer-forged alloy steel barrel chambered in .22 WMR. The barrel utilizes a 1:14" right-hand twist optimized for .22 Magnum ammunition and features a traditional non-threaded target crown, making it ideal for shooters who prefer a classic sporting rifle configuration.
Model 8321 is equipped with a durable black synthetic stock featuring Ruger's modular stock system. Two interchangeable comb modules are included—a low comb for use with iron sights and a raised comb for scoped shooting—allowing the rifle to be quickly configured for different optics and shooting styles. The standard stock provides a comfortable 13.75-inch length of pull suitable for most adult shooters.
The rifle comes equipped with Williams™ fiber optic sights, including a bright fiber optic front sight and an adjustable rear sight for excellent visibility in varying light conditions. The receiver incorporates a 3/8-inch rimfire scope base and is drilled and tapped for Weaver® #12 bases, providing multiple optic mounting options.
The rifle feeds from Ruger's dependable 9-round rotary magazine designed specifically for .22 WMR cartridges. Additional features include a 70-degree bolt throw, tang-mounted manual safety, oversized bolt handle, sling swivel studs, and a lightweight 6.0-pound overall weight that balances well for both field carry and bench shooting.
Combining a 22-inch precision barrel, adjustable trigger, modular stock system, and Ruger's proven bolt-action design, the Ruger American Rimfire Model 8321 is an excellent choice for hunters and shooters seeking the performance and versatility of the .22 WMR cartridge.
Key Features
- Chambered in .22 Winchester Magnum Rimfire (.22 WMR)
- 9-round rotary magazine
- Bolt-action operation
- 22" cold hammer-forged barrel
- Non-threaded target crown
- Ruger Marksman Adjustable™ trigger
- Ruger Power Bedding® bedding system
- Black synthetic stock
- Interchangeable low and high comb stock modules
- Williams™ fiber optic front sight
- Adjustable rear sight
- 3/8" rimfire scope base
- Drilled and tapped for Weaver® #12 bases
- Tang-mounted manual safety
- Oversized bolt handle
- Sling swivel studs
- Lightweight 6.0-pound design
