.22 Hornet
Small varmint cartridge; bolt-action and some semi-auto.
Barrels
Rifled tubes that guide the projectile
No barrels available in .22 Hornet yet.
Bolt Carrier Groups
The heart of the AR action
No bolt carrier groups available in .22 Hornet yet.
Magazines
Feed devices for ammunition
Muzzle Devices
Flash hiders, brakes, and compensators
No muzzle devices available in .22 Hornet yet.
Ammunition
Cartridges chambered in this caliber