The SHOCK STOP bumper works great........stops string buzz imediately. However, I did have one break and they replaced it with an "unbreakable" new one. I soon put on a NAP Drop Away rest so I had to ditch the bumper. I think it makes the bow very quiet......hopefully they have one on it now that can take that brutal punishment shot after shot.

Good Luck, you got a great bow at a great price.