Not personally owning one and not personally being involved with S&W decision making of course, but in in GENERAL......... Company's stop making a specific product for several reasons. The first is that they can NOT make what they deem to be enough profit. Second is lack of what they deem to be enough sales, third is difficulty in producing that product in proportion to the amount of profit made per unit.

So to sum it up it was probably an expensive model to make and they just were not selling enough to warrant production. The manpower and equipment tied up in production of this model was probably better spent on more profitable and popular models.