OK most everyone has probably seen the clip that was posted here several times of Shatner in the lawyer show where he draws on an armed robber and shoots him in the foot, while making jokes about it.
So I am watching his new show this week, "Bleep my Dad says" and I notice in the first scenes he keeps his shotgun on a rack in the living room, and uses it to answer the door. Granted its 9PM, but apparently still light outside.
Then the next day he is wearing the classic "Photographer's vest" cover garment.
I don't know if his wardrobe department is trying to convey him as a gun nut, or if it's his personal choice to wear the vest.