Okay, let's have a little fun. Please assume that all questions forbid the use of search engines and Wikipedia. Books are fine, as are your own knowledge. Ypu're on the honor system, so technically I can't stop you, but c'mon, let's make it fun .
Question 1: In what decade was the patent issued for an electrically operated minigun/Gatling gun?
Question 2: In what year did the AK-74 begin to be fully fielded in the Red Army?
Question 3: For what cartridge was the Armalite AR-5 chambered?