I was surfing the net and found the "*********" which listed a fully functional Elven bow of Legolas:
It is not a part United Cutlery licensed line, which will be non-functional. These are hand-made and I expect are Licensed copies. I am sure the UC version will differ slightly from these copies. However, these bows are not cheap!!! $469.00.
They also have the Elven Army bows used at Helms Deep, which are fully functional and even more expensive!
They have the peacock quiver and arrows of Legalos, but... you guessed it, very expensive.