I did not like mine, I think they will cheek slap to some degree no matter what because of the design. Many people do like them tho. I have a Enidine on my 870, with Mesa LEO adapter and a Magpul CTR. I find it a far superior solution, but it is much more money, and doesn't reduce any recoil at the pistol grip. It's more similar to the kicklite than the knoxx... however quite a bit more money by the time you buy a M4 adapter, the enidine, and a buttstock.