Gau 16

Front 1

What is the rate of fire for the GAU 16, 50-caliber machine gun?

Back 1

750- 850 rounds per minute

Front 2

GAU 16
Chamber pressure

Back 2

50,000 psi

Front 3

GAU 16
Maximum range

Back 3

6500 meters

Front 4

GAU 16
Maximum effective range

Back 4

1850 meters

Front 5

GAU 16
Muzzle velocity

Back 5

2775 fps

Front 6

GAU 16
Cook off can occur after______ rounds

Back 6

150-200

Front 7

GAU 16
The two types of barrels must be checked for what prior to each use?

Back 7

New barrel-PN. 7265156 (5,000 rd)
Old barrel-PN. 9579781 (3,000 rd)
Are both checked with a barrel erosion gauge for serviceability prior to use.

Front 8

What types of ammunition are available for the GAU 16?

Back 8

Ball
Tracer
Dim Tracer
Armor Piercing (AP)
Armor Piercing Incendiary (API)
Armor Piercing Incendiary Tracer (APIT)
Armor Piercing Explosive Incendiary (APEI)

Front 9

What are the 9 major assemblies of the GAU 16?

Back 9

Barrel
Barrel extension assy.
Back plate assy.
Rod assy.
Breech bolt assy.
Recoil buffer assy.
Cover
Retracting slide assy.
Receiver & barrel jacket assy

Front 10

GAU‐16/A is an automatic, __________, ___________, ____________ machine gun.

Back 10

belt fed, air cooled, recoil operated

Front 11

GAU 16
weight

Back 11

65 lbs gun only
125-129lbs with all the bells and whistles

Front 12

GAU 16
max rounds before possible cook off

Back 12

150

Front 13

100 rounds of ammunition weighs

Back 13

35 lbs

Front 14

GAU 16
black tip rounds are

Back 14

AP

Front 15

GAU 16
silver tip rounds are

Back 15

API

Front 16

GAU 16
orange tip rounds are

Back 16

tracers

Front 17

GAU 16
red or orange tip rounds with a silver ring are

Back 17

API tracers

Front 18

GAU 16
round with no color on the tip is

Back 18

ball

Front 19

GAU 16
round with a lavander tip and silver ring is

Back 19

dim tracer

Front 20

GAU 16
round with a green tip is

Back 20

APEI

Front 21

How many disks are present in the GAU 16/A or the XM 218 back plate buffer tube?

Back 21

22 +/- 1

Front 22

A weak or worn oil buffer tube lock will…

Back 22

…allow the buffer to shift during operation which may cause a decrease in rate of fire.

Front 23

What does the oil buffer tube do?

Back 23

The oil buffer tube absorbs the recoil of the weapon after each round is fired, and controls the rate of fire.

Front 24

How do you set the rate of fire with the oil buffer?

Back 24

Turn the buffer tube CCW until there are no clicks, then turn CW no more than 3 clicks past the O. This opens the oil buffer tube to the highest rate of fire. After 3 clicks, the rate will decrease with each click.

Front 25

GAU 16
What happens if a cartridge fails to extract after firing?

Back 25

The belt feed pawl arm will ride over the un-extracted cartridge and lift the belt feed pawl so that it cannot engage the belt, this prevents double feeding.

Front 26

What is the cycle of operations for the GAU 16/A?

Back 26

Firing
Recoiling
Extracting
Cocking
Counter recoiling
Feeding
Ejecting
Chambering
Automatic firing of subsequent rounds

Front 27

GAU 16
What is headspace, and at what distance is it set?

Back 27

Headspace is the distance between the front face of the bolt and the rear end of the barrel.It is set between 0.202 and 0.206"

Front 28

GAU 16
What is timing and what is it set to?

Back 28

Timing is the distance between the front of the barrel extension and the trunnion, that is the point at which the firing pin is released when the recoiling parts reach battery. it isset between 0.020 and 0.116”

Front 29

GAU 16
If the weapon fires on the no fire side of the timing gauge turn the wheel ___________.

Back 29

left

Front 30

What is the difference between a stoppage and a malfunction?

Back 30

Stoppage is an interruption in the cycle of operation that causes the weapon to stop firing.

A malfunction is caused by damage to the weapon

Front 31

GAU 16
If the weapon fires one round and stops?

Back 31

The buffer may be closed.

Front 32

GAU 16
If the weapon fires two rounds and stops?

Back 32

Timing is set too early.
turn wheel left

Front 33

GAU 16
If there is a decrease in the rate of fire?

Back 33

Improperly set or dirty oil buffer.

Front 34

GAU 16
If the weapon stops out of battery position?

Back 34

Improperly set headspace.

Front 35

GAU 16
After 4 short bursts with 6
sec cool down time between
bursts, a _____________cool down
period shall be observed.

Back 35

2 minute

Front 36

GAU 16
over all length with flash supressor

Back 36

61.75"

Front 37

GAU 16
barrel length

Back 37

36"

Front 38

GAU 16-what are the cool down times for 12 sec burst, 6 seconds, 4 seconds and 2 seconds?

Back 38

1 min
29 sec
13 sec
6 sec

Front 39

name these parts

Back 39

barrel extension

Front 40

What is the difference between the GAU 16/A and the XM 218?

Back 40

GAU 16 on left XM 218 on right

Front 41

what is this? and name parts

Back 41

alternate feed bolt

Front 42

Name This part of the bolt.

Back 42

Firing pin extension

Front 43

name this part

Back 43

firing pin

Front 44

name this part

Back 44

sere slide

Front 45

name this part

Back 45

accelerator stop