I' ve never really sat down and looked at one, but I' ve always heard that the bbls in handi-rifles are quick-change, like the T/C Encore (or I should say the T/C is like them), I didn' t notice that they' d be " easily" or " quickly" interchanged, just looking at them, and I' ve never seen extra bbls for the Handi' s, why is that, or are they even " easily and quickly" interchangeable?