I use the Kick-Eez because they come in 1" or 1 1/4" thicknesses. I usually have to add that for a proper LOP. Longer arms. I have them on everything except my syn stocked SKS, but I added 4 1/4" butt plates to it. I don't really feel recoil without them, just shoot better with them. Short of a custom stock, I have to do this for every commercial stock I buy. Even though the commercial producers have to pander to the masses, they make "youth size" stocks, I am sure that they could offer "man sized" stocks. I see lots of people all crabbed up on their rifles and lots of times, the recoil they feel is because they don't have the right LOP. Usually just toss them a slip on recoil pad, adds 1/2" -3/4" and the groups clean right up. Felt recoil has a lot to do with stock fit.
Short of a custom stock, and until I can afford to get them, I'll have to do this for every commercial stock I buy.