1. It is the man behind the gun that tells. 

2. A guard zapped him with the stun gun.

3. It's dangerous to have a gun about the house.

4. He held his gun in readiness.

5. There was a bang as the gun was fired.

6. He strung his gun up on the wall.

7. Her eyes were fixed on the gun.

8. To her horror, the man produced a gun.

9. He snatched up his gun and fired.

10. Do you have a gun with?

11. Both men imbibed considerable quantities of gin.

11.

12. The timing of the gun was precisely synchronized with the turning of the plane's propeller.

13. The search for other kinds of evidence tying him to trafficking has not produced a smoking gun.

14. They stuck a gun in his ribs and made him fork over all his money.

15. Drop the gun, put your hands in the air, and don't make any sudden movements.

16. I hooked up the gun which had dropped in the well.

17. Melissa had guzzled gin and tonics like they were lemonade.

18. When you've aligned the notch on the gun with the target, fire!

19. In the back of the truck was a 12.7 millimeter rapid-fire machine gun.

20. He tried to strangle a border policeman and steal his gun.