I'm not Lloyd, but...
The Ruger Single -Six is an excellent all around .22 revolver. Lett is indeed out of business, and that's a real shame. Many of my Ruger revolvers wear their after-market grips, and I regret selling a few without removing the Letts first. There are several after market, non-custom-fit grip makers out there, whose names are well known, but none compare to the Lett grips, in my opinion.
It may not be generally known by everyone, but William B. Lett was one of the closest childhood friends of Bill Ruger, Sr.