RE: How much will this cost to fix?
Rev, he's asking about a sight. Accra was/is a brand of sight.
ths78, you need to find out more about the sight. What kind and model. Target sight or hunting? I don't understand the term "tube" you are using to describe the sight.
If I remember right, Accra quit making sights and very well may have closed it's dors a few years ago. You might be just as well off to write off the sight and just get a new one. Accra wasn't a very poplular hunting sight so parts are likely to be hard come by.
Also, just for your info the FireFlight is a pretty dated bow so your buddy shouldn't be asking too much for it. Want my opinion? $100 for the whole works----tops.