I was rumaging through some boxes at a sidewalk sale yesterday and ran across a set of "Pierce" wrap around finger groove grips for a P14. They were close out priced at $5. I couldn't resist. I've never found a single set of finger groove grips that fit my hand. I bought some finger groove rubber grips for my M29 and took them off to install some pachymar grips. I took the humpy/bumpy Hogues off two 1911s and put standard style grips on them. My Glock feels weird in my hand. Even the AR15's don't feel right till I start shooting and no longer pay attention to that finger groove thing on the front of the pistol grip.
However, these Pierce grips fit my hand like my hand was used as the mold for them. My son (about my size) picked the pistol up after I put the grips on and he commented about how good it fit his hand.
Everyone's hand/fingers are a little different but I just thought I'd share this bit of info in case someone else is having trouble finding grips for their P14.