Old Roger, as far as I know the 3913 TSW is not LEO only. S&W only ships them to LEO with night sights, but the are available to everyone without the night sights unless they changed the requirement recently.

The 3913 TSW is hard to find, just like a lot of other low volume S&W models. Just keep checking Gunbroker, GunsAmerica and the othe auction sites, they pop up once in a while.

Also, like Dot says, there is nothing wrong with the stock 3913. I have one and it is a great, reliable gun.