The gun & rifle he used on November 22, 1963 were purchased & delivered through mail order
The Warren Commission 
concluded that Oswald purchased the rifle through the mail using an... [DOC] [TLE] Online gun purchases as easy as Oswald's mail order - SFGate [PAR] Nov 16, 2013 ... ... F. Kennedy on Nov. 22, 1963, with a mail-order Mannlicher-Carcano ... Fifty 
years later, mail-order purchases of guns are less common.