Superb general purpose rifle sling - Magpul Industries Magpul RLS Sling

The Magpul RLS is an excellent replacement for the standard nylon carry strap. As outlined in the directions, when properly installed, it can be used as a loop-style sling for stabilizing your shots. For instance, if one were using a pump shotgun, if presented with a longer range situation where a slug were needed, one could perform a slug changeover, loop up, and take the shot.