My father was an AIT instructor. I have pictures with me holding real and toy guns from about the time I could walk. I think I was pretty much set, with or without the media!
Big Influences in Terms of the "Right" Way to Carry or Handle a Gun:
Sgt. Saunders (Vic Morrow) on Combat! Lt. Hanley (Rick Jason) also played a role. Both were crack shots who took proper care of their Thompson and carbine, respectively.
Paladin (Richard Boone) on Have Gun - Will Travel. I still want an SAA with a trigger pull that is measured in ounces. Paladin only pulled a gun when he intended to kill.
John Steed (Patrick MacNee) on The Avengers. Steed NEVER carried a gun, but he was not adverse to taking them away from people and shooting up the joint as needed.
In looking back, my relatives and television influenced me a lot more than movies. I guess I am also really old....