Introduced in 2005. Bolt-action rifle features four interchangeable barrels in four different rimfire calibers. Black synthetic stock. Detachable 5-round magazine. Included barrels are: .22 Long Rifle; .22 WMR; .17 HMR; .17 Mach 2. All 22" in length. Blued finish. Weight about 5.75 lbs. NOTE: NIB price for rifles with only one barrel is $948. Extra barrels are $260 each.