Yes there is.
Do a Yahoo or Google search for any one of the following companies. Cheaper than dirt, Natchez Shooters Supply, Cabela's, Brownells, The Gun Parts Corporation. Most, if not all of these places can supply you with what you need. If ordering from the web, just enter "AR-15 sight tool" on the sites search engine.
Here's what Cheaper than Dirt has to offer:
http://www.cheaperthandirt.com/Sear...oducts&num=10&q=ar+15+sight+toolGood luck. -Tom