Amazon.com is the easiest place to find this particular BB gun. This is because the retail site is pulling together a number of different online stores into one place.
Using Amazon, buyers can search for something like the Desert Eagle BB Gun and the site will bring back a place like Joe's Sporting Goods as the actual seller. This puts the buyer in contact with a shop a buyer might not otherwise know existed, but gets him or her to the product nonetheless. Amazon will also direct buyers to other shops should Joe's or another retailer suddenly be out of the item a buyer is seeking.