Ok, so I got my AA S510 and am using a folding table on my porch. I have a small plastic box with a folded t-shirt to rest my leading hand on but I think I'd like a bipod. I know there are many, expensive and inexpensive ones, out there but just how hard is it to mount (or unmount) one? Drilling into forend? I suppose one would have to take the forend off in order to drill. Ideas? Suggestions?