I have a Turkish made tempest acquired new. It was unbelievably hard to cock in comparison to my senior. Eventually, upon stripping discovered reason - spring was more akin to a cut down rifle one rather than the 'correct?' webley type - replaced with a spare from the senior and much cocking, firing with only a slight drop in power - balanced with better shootability. Later the link spring broke and purchased a new barrel complete with linkages from Chambers. The new barrel different from the original - muzzle, fore-sight and in, particular the rifling much more sharper/defined. Fitting the new barrel entailed no longer requiring the breech seal be shimmed. Question is who/where are the spare parts manufactured or have I luckily acquired a new/old stock barrel?