for Kutter -- read your paragraph on the single nonselective trigger for the lefever nitro and western arms sxs shotguns. have a couple savage fox model B sxs and your does a good job of explaining the workings of the savage triggers on the model B fox. have posted request for pictures of the nitro and western arms single triggers here. did a google search and found pictures poster here of drawings probably for the shop that made the trigger components. was going to repost the picture here but do not see any way to do it. the drawing does show swinging weight that would act as an inertial block on the itnaca nonselective single trigger. the savage fox has a inertial block but it is a puny piece of metal that appears to be of no use for this trigger to work