Chiappa Firearms CF340155D 1873 SSA 22LR/22 Magnum 4.75″ Barrel A 10-shot version of the classic Single Action with interchangeable cylinders in caliber .22LR. and .22 magnum. Three barrel lengths are available (4 3/4″ 5 1/2″ 7 1/2″). Sights are fixed except on the 7 1/2″ barrel model.