Marksmanship #2

Question 1

What are the eight sequential phases of the cycle of functioning of the M16 and M4 series weapons?

Answer 1

(TC 3-22.9, para 2-9)

1. Feeding
2. Chambering
3. Locking
4. Firing
5. Unlocking
6. Extracting
7. Ejecting
8. Cocking

Question 2

What system of operation is used by the M16 and M4 series weapons and how does it work?

Answer 2

A direct impingement gas operating system; this system uses a portion of high pressure gas from the cartridge being fired to physically move the assemblies and subassemblies in order to complete the cycle of function. (TC 3-22.9, para 2-10)

Question 3

What are the three thermal stress reducing methods for the M16 and the M4?

Answer 3

Radiation cooling, conduction cooling, and convection cooling.

Question 4

What is the purpose of an aiming device?

Answer 4

To align the Soldier, the weapon, and the target to make an accurate and precise shot.

Question 5

What are “iron” aiming devices and/or iron sights?

Answer 5

Consists of a front sight post and a rear aperture.

TC 3-22.9, para 3-2

Question 6

Name some other aiming devices in common use today.

Answer 6

Optics (Close Combat Optic (CCO)), Rifle Combat Optic (RCO), Thermal Weapon Sights (TWS), and laser pointers/illuminators.

(TC 3-22.9, para 3-2)

Question 7

What is a reticle?

Answer 7

A series of fine lines in the eyepiece of an optic.

TC 3-22.9, para 3-8

Question 8

What is a stadiametric reticle? (stadia reticles or choke sights)

Answer 8

Rapidly determines the approximate range to a target based on its standard dimensions.

Question 9

The iron sight on a M16 and M4 has two selectable apertures, what are they used for?

Answer 9

Small aperture- used for zeroing and mid and/or extended range engagements.
Large aperture- used during limited visibility, close quarters, and for moving targets at close or mid range.