The rimfire metallic cartridge is America's oldest, going all the way back to the 22 Short in 1857. Today the rimfire family also includes 22LR, 22 Mag, 17 HMR, 17 WSM, and 17 HM2. Rimfires are popular worldwide for everything from plinking to small game and varmint hunting to Olympic biathlons. There is really no niche that a rimfire hasn't filled at one time or another. Rimfire guns come in every type: rifles, revolvers, pistols; single-shot to semi-auto. Most gun owners start out with a 22LR as a beginner's gun to learn safety and fundamentals, and most of us still have at least one rimfire. About 20% of the annual U.S. ammo market is 22LR ammo, no other caliber even comes close to those kinds of numbers. Bid on or buy rimfire guns, ammo, and targets at GunBroker.com now!