why collectors who have a S&W model 631 never sell them.. The 631 is a short production run of stainless J-frame revolvers in .32 H&R Mag and a sweetheart of a "kit" gun... I`ve always carried a small frame Smith in one caliber or another on my hip when hunting.. Most often its been a four inch in 22 mag or a two inch in 22lr...An early three inch model 60-4 in 38 Special has also made a few journeys. I`am not saying this gun is the perfect outdoor packin pistol but it sure is a top contender in the category... The 32 H&R and 327 Federal have put the 32 calber in a much higher position then its earlier version`s...A useful cartridge for the great outdoors...