Suppressors (Exam 4)

Question 1

What 4 things make sounds when shooting a firearm?

Answer 1

1) Action
2) Firing pin
3) Ballistic crack
4) Gases

Question 2

What are 3 ways to reduce sound?

Answer 2

1) Reduce temperature
2) Reduce pressure
3) Increase space/volume inside barrel

Question 3

Generally, what did the Gun Control Act of 1968 say about suppressors, silencers, etc.?

Answer 3

Any device created with the intent of diminishing firearm sound was to be regulated

Question 4

Where are toolmarks from suppressors left?

Answer 4

1) Bullets
2) Cases

Question 5

What are the 2 purposes of the entrance/expansion chamber (muzzle to first baffle)?

Answer 5

1) Trap bulk of gas
2) Reduce pressure thus increasing volume

Question 6

What are the 2 purposes of the baffles (middle chamber)?

Answer 6

1) Trap gases to cool
2) Delay gas exit

Question 7

Materials such as aluminum eyelets, screen, and fiberglass are sound…

Answer 7

Absorbing

Question 8

Do baffles increase or decrease volume?

Answer 8

Increase

Question 9

Give 3 examples of homemade silencers.

Answer 9

Aluminum cans, plastic bottles, & cloth

Question 10

When examining suppressors, proper documentation involves what 3 types of exams?

Answer 10

External, internal, and chemical