Final

Question 1

Who was the first to testify using firearm identification?

Answer 1

Goddard

Question 2

In what landmark case was there evidence tampering?

Answer 2

Sacco and Venzetti

Question 3

Which of the following was the first to resemble modern rifles?

Answer 3

Matchlock

Question 4

What gun was invented in response to the need for lightweight, handheld machine guns?

Answer 4

Browning Automatic Rifle

Question 5

Which of the following guns used the same cartridge as the Winchester rifle?

Answer 5

Colt Peacemaker

Question 6

What is the first known source of gross metal casting?

Answer 6

Sand molds

Question 7

What type of fine forming leaves a concentric circle?

Answer 7

Turning

Question 8

Which potential issue in test firing is caused by limp wristing?
When the cartridge fails to eject after firing?

Answer 8

Stovepipe

Question 9

Which breechface pattern in usually associated with Glock?

Answer 9

Parallel

Question 10

Which of the following is both a pinching and a gripping tool?

Answer 10

Lineman’s pliers

Question 11

What type of visual analysis is associated with combinations of gas and smoke?

Answer 11

Carabonaceous material

Question 12

Which of the following is used for magnetic surfaces in serial number restoration?

Answer 12

(Name) reagent

Question 13

What type of obliteration is created by a round edge hit into the metal?

Answer 13

Hammer peening

Question 14

Which rifle was the U.S. response to the Mauser rifle in the Spanish-American war?

Answer 14

Krag rifle

Question 15

Which was the first person to create a database of firearms?

Answer 15

Charles E. Waite

Question 16

Which firearm mechanism used a nitrate soaked cord lit on fire to ignite the primer?

Answer 16

Matchlock

Question 17

Who wrote the first documentation that firearms leave individual marks?

Answer 17

Victor Balthazard

Question 18

When producing cartridge cases the ____ stage adds height to the cartridge case.

Answer 18

Drawing

Question 19

Which stage in the cycle of fire doesn’t leave any marks?

Answer 19

Extraction

Question 20

Which is a passive safety?

Answer 20

Hammer block

Question 21

What occurs after the obturation?

Answer 21

Unlock

Question 22

Firing pin shape is not found on centerfire?

Answer 22

Rectangular

Question 23

1st magazine fed rifle

Answer 23

Henry Rifle: tube magazine (lever action, breech loading)

Question 24

How did the Winchester 1866 rifle correct the Henry rifle?

Answer 24

Winchester had a loading port and wood forestock, Henry had an easily jammed tube and made of iron (hot to hold)

Question 25

Winchester 1873

Answer 25

centerfire

Question 26

Colt Peacemaker

Answer 26

45 cal, same cartridge as Winchester rifle

Question 27

first bolt action rifle, first true magazine (not tube) fed rifle

Answer 27

Mauser Rifle 1888, had stripper clip

Question 28

Springfield rifle

Answer 28

almost identical to Mauser, with stripper clip, 30 cal, invented 1903

Question 29

Browning 1911

Answer 29

originally 38, then 45, manufactured by Colt

Question 30

1918, response to need for lightweight, handheld machine guns, trench warfare, Korean War and WWII

Answer 30

Browning Automatic Rifle (BAR)

Question 31

Tommy Gun

Answer 31

1919: shot 45 auto instead of rifle

Question 32

M1-Garand

Answer 32

1919-1932, semiauto, accurate + high rate of fire

Question 33

1941, close combat rifle, small cartridge

Answer 33

M1 Carbine

Question 34

MP44

Answer 34

1941, German response to M1 Carbine, 7.62X39 mm, first "assault rifle" via Hitler

Question 35

AK 47

Answer 35

Russian, 7.62x39 mm, invented by Kalashnikov

Question 36

1962, American assault rifle invented by Stoner, 5.56x45 mm, first to utilize plastics/polymers

Answer 36

M16

Question 37

Mauser rifle

Answer 37

stripper clip, box magazine

Question 38

Purposes of annealing

Answer 38

Refining the grain, Improving electrical and magnetic properties, Inducing softness, improve machinability

Question 39

most semiautomatic pistols are ___ and ____

Answer 39

Blowback, short recoil

Question 40

CNC

Answer 40

Computerized numerical control

Question 41

Safety found on all pistols (?)

Answer 41

Slide disconnect

Question 42

Chamber marks are most commonly found on ____

Answer 42

Small caliber bullets

Question 43

Welding

Answer 43

Cannot usually restore SN

Question 44

Brownsville 1906

Answer 44

Nixon overturns case because cartridges brought to police by citizens identified to a Krag or Springfield rifle. Conspiracy of silence.

Question 45

Phelps/Wolcott 1915

Answer 45

Charlie Stielow, neighbor, lied about having a 22. Dr. Hamilton examines cases, Stielow put on death row, King and O'Connell confess to the murders, faulty firearms testimony. Class characterstics didn't match.

Question 46

Sacco/Vanzetti 1920

Answer 46

Were executed in 1927 for death of 2 guards and $15,000. Hamilton says bullets don't match, Charles says they do.

Question 47

EDM

Answer 47

Electrical discharge machining

Question 48

St. Valentine's Day Massacre

Answer 48

Goddard able to eliminate every cop's gone. Al Capone responsible.

Question 49

Constable Gutteridge 1927

Answer 49

fired CC found in stolen vehicle ID'd to firearm found on Kennedy/Browne.

Question 50

lead/barium nitrate

Answer 50

The oxidizer

Question 51

Ground borosilicate glass

Answer 51

adds friction, increases sensitivity

Question 52

gum arabic/gum tragacanth

Answer 52

the binder

Question 53

Sidewall thickness

Answer 53

CF thinner than RF

Question 54

trimming

Answer 54

Cutting to correct dimensions, determines height, but not necessarily end height

Question 55

Mouth annealing

Answer 55

CF

Question 56

Relief annealing

Answer 56

RF

Question 57

Annealing, pickling, washing

Answer 57

Done twice for RF

Question 58

spinner bit

Answer 58

Needed in rimfire priming mixture

Question 59

CF primer

Answer 59

Primer mix + foil disc + shellac and alcohol (to seal) + anvil (for fp to strike)

Question 60

Primer seated too low

Answer 60

Primer may not ignite

Question 61

Primer seated too high

Answer 61

Powder may not ignite, CC may bulge

Question 62

Knurled cannelure

Answer 62

Found on revolver/rifle bullets b/c lubricant.

Question 63

Crimped cannelure

Answer 63

On cartridge case to keep it all together.