Day Optics & Observation Theory

Question 1

The RCO (also known as the ACOG) is a

Answer 1

day and night dual source illuminated telescopic sight with a tritium illuminated reticle pattern designed for the M-16 family of weapons.

Question 2

The RCO system uses

Answer 2

fiber optics to provide a low light and night aiming capability and eliminates the need for batteries.

Question 3

The USMC fielded the RCO in order to give its Marines the ability identify and accurately engage targets out to

Answer 3

800 meters

Question 4

The Chevron Width on the RCO is

Answer 4

• 19 inches at 300m

- 19 inches is the average width across a person’s chest

Question 5

The Field of View on the RCO is

Answer 5

7.0 degrees at 100m (12.7m across)

Question 6

The Bindon Aiming Concept (BAC) is able to

Answer 6

combine the traditional long-standoff marksmanship capability with the ultimate in close combat transitional aiming & utilizes both eyes to acquire, track, identify and aim in on a target.

Question 7

Benefits of using the RCO are

Answer 7

• Allows individual to quickly estimate range of targets.
• Acquire partially camouflaged targets at ranges beyond 300 meters.
• Allows individual to see into and through shadows, windows and foliage.
• Acquire targets in low light conditions.
• ID enemy vs. non-combatant vs. friendly.
• Reduce potential for fratricide.
• Enhance combat exchange ratio in our favor.
• Allows for accurate fire support.
• Reduce ammo expenditure.

Question 8

What 2 methods can the RCO be zeroed at

Answer 8

o 100m BZO (preferred method)

o 33m BZO (36 yard)

Question 9

The day optic that allows the individual Marine the ability to acquire, identify and track targets and objects on the battle field is called

Answer 9

Binoculars (Leupold Binoculars)

Question 10

The two basic positions for holding binoculars are

Answer 10

• Unsupported Method - allow your elbows to rest naturally along your body with just enough tension to keep the binoculars steady and to your eyes as you look through them.
• Supported Method - resting your elbows or arms on a sturdy tree limb, a vehicle, the prone position, or using a stable sitting position and allowing the binoculars to remain steady as you look through them.

Question 11

Observation is a three part process which consist of

Answer 11

seeing, assessing and then communicating

Question 12

According to studies about 90% of the information that your brain uses in order to orient and make decisions comes from your

Answer 12

sense of vision