Swift makes good scopes that are lifetime warrenty and are pretty tough. I have a 4X32 on my Mossberg 695 and have had no problems making up close or 100 yrd shots with it.
You really cant go wrong with Swift, inexpensive and good qaulity. Just be sure you dont buy cheap rings and bases for whatever scope you use. Slug guns scope are hell on recoil to the bases and rings. You'll know because you have a shot string in a line if the rings are loose and the scope will have scratches on the tube where it mounts inside the rings.

Hope this helps,
DJ