Just installed one on my 870. Plan on shooting 150 sporting targets tmro. Federal four pack. 1-1/8 1200 fps. Anxious to see how this thing works.
Yes on my 870. It was a TB stock and already long. I put one on a Jack West and one on a Fabarm XLR5. I Didn't cut either one. Theyre about 1-3/8 so depending on your present pad and LOP.
I just put one on my Perazzi and found it significantly reduced the felt recoil. I don't know if it reduced it by 80% as claimed in their advertising, but it was certainly significant.