ACME North has a used Ruger Super Blackhawk single action six shot revolver in .44 magnum.

The Ruger Super Blackhawk revolver has traditional Western-style, hand filling grips, durable coil springs throughout for maximum reliability, transfer bar mechanism and loading gate interlock to provide an unparalleled measure of security against accidental discharge, a fixed ramp front side and adjustable rear sight, cold hammer forged barrel and Houge oversize rubber recoil absorbing grips combine to make this an excellent choice for backwoods carry or general shooting applications. Comes with the original factory box and a spare set of white plastic grips. 

Item number G-74412-1