In addition to the slip-on recoil pads that are widely available, I recently found a pad from tickbitesupply.com that mounts directly in place of the steel butt plate, using the same screws. Haven't been to the range with it yet, but I think it will do just fine. I like the added benefit of it not being able to slip or twist around like the limbsaver type slip-on pad.
I just installed that very one (on the one I’m not customizing). It wasn’t a good fit. I had to let it sit in boiling water for about ten minutes to soften it up enough where it would fit cleanly, and it still doesn’t look that great. (I’ll take a photo later).