just about all the adverstised 1000fps with lead/1200fps with PBA gamo shadows and hunter series share the same or have similar actions (except for the CFX). they all will fit in each others stock only if the end caps are the same. if not, you can always switch the end caps to fit the specific stock. the actions are basically the same, they only differ because of the o-ring seals, some are on the barrel and some are on the action, also the top hats inside the piston are different in weight and style depending on the model.
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