I bought a new Model 53, 6" barrel, .22 Remington Jet in 1965 with the smooth presentation target grips on the revolver. The gun had been special ordered with a 4" barrel and came with the 6" instead. The customer refused to buy the gun. I don't know if the grips were special ordered or not. I still have it, still shoot it and really like those smooth grips. Keep shootin'