Rifle Squad Weapons

Question 1

M27 Infantry Automatic Rifle (IAR) Characteristics

Answer 1

Lightweight
Air-cooled
Pusher rod gas-operated
Magazine fed
Shoulder fired weapon

Operates in semi-automatic and automatic modes of fire

Question 2

M27 Infantry Automatic Rifle (IAR) Specifications Characteristics

Answer 2

Question 3

M27 Infantry Automatic Rifle (IAR) Rates of Fire, Maximum Effective Range and Maximum Range

Answer 3

Question 4

M27 Infantry Automatic Rifle (IAR) Cycle of Operations

Answer 4

Firing
Unlocking
Extracting
Ejecting
Cocking
Feeding
Chambering
Locking

Question 5

M27 Infantry Automatic Rifle (IAR) Function Check

Answer 5

Question 6

M27 Infantry Automatic Rifle (IAR) Major Components

Answer 6

Question 7

M27 Infantry Automatic Rifle (IAR) Bolt Assembly

Answer 7

Question 8

Use SCO M83 MRADs to calculate approximate range of a 19 inch silhouette target

Answer 8

Question 9

Use SCO M83 to adjust aiming for targets at 300m and 500m

Answer 9

Question 10

M320 Characteristics

Answer 10

Question 11

M320 Capabilities

Answer 11

Question 12

M320 Usage/Purpose

Answer 12

Provides a rifle squad a high explosive (HE) asset to bridge the gap between the maximum throwing range of the M67 Fragmentation Grenade and the minimum engagement distance of the 60mm Light Mortar.

Provides the ability to deliver point fire on caves, bunkers, windows, and lightly armored vehicles, and is also used for illumination and marking targets.

Question 13

M320 Limitations

Answer 13

Limitations of the weapon system include the need for a clear trajectory, the relatively slow rate of fire, vulnerability of the sights to damage, and the minimum engagement distance of 31 meters in combat (165 meters in a training environment). Another much overlooked limitation of this weapon is the restriction on training ammunition that eventually leads to a limitation on a Marines’ proficiency.

Question 14

M320 Offensive Roles

Answer 14

Engage and destroy groups of enemy personnel, thin-skinned vehicles, bunkered positions, provide suppression on an objective, engage targets in defilade, provide illumination/signals, and mark targets.

Question 15

M320 Defensive Roles

Answer 15

Provide fires to cover dead space in the fire team’s sector. Cover obstacles within sector with organic HE in order to maximize enemy casualties. Provide illumination to backlight/highlight enemy in the engagement area so they can be easily killed.

Question 16

40 MM HE/DP & HE Characteristics and Usage

Answer 16

Question 17

40 MM Star Parachute Characteristics and Usage

Answer 17

Question 18

40 MM Tactical CS Grenade Characteristics and Usage

Answer 18

Question 19

40 MM White Star Cluster Characteristics and Usage

Answer 19

Question 20

40 MM Ground Marker (Smoke) Characteristics and Usage

Answer 20

Question 21

M320 Function Check

Answer 21

Question 22

M320 Cycle of Operations

Answer 22

Question 23

M320 Immediate Action Procedures

Answer 23

Question 24

M320 Weapons Conditions

Answer 24

1: Round in the breach, breach closed, weapon on safe
2: Does not apply to the M320
3: Does not apply to the M320
4: Breach empty, breach closed, weapon on safe

Question 25

M67 Fragmentation Grenade Range and Casualty Radius

Answer 25

Range: ~30m-40m depending on individual

Effective Casualty Radius: 5-15m

Question 26

How does a grenade operate?

Answer 26

Question 27

M67 Fragmentation Grenade time delay fuse and weight

Answer 27

4.85-5.15 second time delay fuse

Weight: 14 oz

Question 28

Describe Grenade Carriage

Answer 28

Grenades are attached to the FLC pouch in the following manner:
* Attach MOLLE grenade pouch to FLC
* Open the grenade pouch and slide the grenade into the pouch with the safety lever against the FLC.
* Be sure the pull ring is in the downward position.
* Wrap the carrying strap around the neck of the fuse and snap the carrying strap to the carrying sleeve.