Shorty 45 MK2
Member
I know Ruger makes a a smaller boot grip for the LCR as does Hogue in G10 (I think) and Eagle in wood, but it's kind of pricey.
Pachmayr Compac grips give a high, solid hold, cover the backstrap completely, and absorb recoil extremely well.
They are longer than the boot-style grips but really not difficult to conceal. I've pocket-carried a J-frame with them for a good many years. If anyone has noticed the gun nothing has been said and I haven't seen anyone staring meaningfully at my right front pocket.