I have noticed that some CTers don't believe Oswald could have picked up C2766 from the USPS because it would have violated certain postal regulations or would have left a paper trail. I'm not familiar with postal regulations back then or now but I'm very familiar with postal workers screwing up in one way or another. Same goes for UPS, Federal Express so I'm not trying to just pick on the USPS. In fact, there have been times when dealing with government agencies at all levels and the private sector that orders and transactions have been botched and, I must confess, that includes me.
To illustrate one incident of major screwup by the USPS here is quoted text from a legal case involving the theft of Postal Money Orders and negligence by two postal clerks.
The point of the post is.... Why assign to malice when stupidity and carelessness can explain the event.
Oswald ordered a rifle and it was sent to his PO Box. All he had to do was take the slip placed in his box to a clerk who handed him his package. CTers have argued it couldn't be delivered because the Hidell name was not listed on his PO authorization form. But that form was lost and Oswald did list Hidell on his NO PO box form. If CTers were correct, however, then the logical next sequence in this pedantic interpretation of post office procedure would have been for the rifle to be returned to Klein's. It was not. CTers could care less about the implications of their theories due to an inability or unwillingness to apply logic to any event that results in an outcome they don't like. If by asserting that A did not happen, it must result in B occurring, then the absence of B occurring undermines the original claim. Klein's sent a rifle to Oswald's PO Box. It can't be accounted for in any way except as being received by Oswald. If post office procedures had precluded delivery, it would have been sent back. It was not. If there were any doubt, there are pictures of Oswald holding the rifle, his prints are on the rifle sent to his PO box (same serial #) etc. And when all is said and done, if there had been some document Oswald signed or clerk who could remember giving him the rifle, CTers would claim they were lying or forged. The game never ends when any evidence of Oswald's guilt is suspect for that reason alone. We would just add a postal clerk's name to all the others who lied to frame Oswald.