You won't find any replacement tips. Bear doesn't make those solid glass recurves any more. Hasn't done for years. I would just sand off the broken part of the busted tip. Then grind down the other limb to match and file new string nocks into each end, about 1/2" down from each end. It won't be an AMO 60" bow any longer and it'll be heavier in draw weight. I'd guess about 5 pounds for every inch you take it down. Leave it as long as you can, but make sure to clean up the broken part down to solid glass.