Clipped Fenses: You see them on a lot of high end doubles perhaps because they help a bit with side loads as sxs doubles are eccentric. However, I doubt they help much. In fact, many dislike them as for fast reloading, the sharp lil buggers can slice and dice you. This is another reason that top third fasteners are disliked by some because they can also get in the way of a fast reload. Still, clipped fenses like articulated triggers and other features are a sign of a well made gun.