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LESSON PLAN

TA31RCO RIFLE COMBAT OPTIC

CS0103

(ON SLIDE #1)

INTRODUCTION: (3 MIN)

1. GAIN ATTENTION. Marines have fought in every climate and place on earth. On 27 November 2006 while serving as a vehicle commander, Sergeant Benjamin E. Israel was tasked with conducting urban operations in AR Ramadi and Ar Rutbah, Iraq. When his convoy came under enemy machine gun fire, one round ricocheted into the vehicle hitting sergeant Israel in the face. Refusing treatment, Sergeant Israel directed the fires of his turret gunner to suppress the enemy while the rest of the convoy maneuvered out of the kill zone. The Marine Corps prides it’s self with the leadership of such individuals. In today’s world every Marine may find himself in such a situation. From the knowledge you gain from this period of instruction you will understand that the Marine Corps makes every effort to arm you with the best possible tools to accomplish your mission. Today’s period of instruction is on the TA31RCO RIFLE COMBAT OPTIC. ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2. OVERVIEW. Good morning, my name is ________. The title of this lesson is the Zero Rifle Combat Optic. We will cover the following subjects: characteristics, features and benefits, Bin don Aiming Concept, specifications, marksmanship improvement, combat improvement, zeroing procedures, combat aiming points, range estimation procedures. The purpose of this period of instruction is to familiarize you, the student, with the characteristics of the TA31RCO-A4 Rifle Combat Optics in accordance with TM 11064-12&p and MCO 3574.2k. This class directly relates to the remaining combat marksmanship classes you will receive later in training.

INSTRUCTOR NOTE

Have students read the learning objectives to themselves as you read them out loud. Emphasize the task in each learning objective to the students. Check for understanding by asking questions as required.

3. LEARNING OBJECTIVES.

a. TERMINAL LEARNING OBJECTIVES.

(1) Given a service rifle/carbine, combat sling, Rifle Combat Optic (RCO), individual field equipment, (3) magazines, cleaning gear, ammunition, and target, zero a Rifle Combat Optic (RCO) to a service rifle/carbine, by achieving a shot group of seven minutes of angle. (0300-M16-1019)

4. METHOD/MEDIA. This lesson will be presented by the informal lecture method; I’ll be aided by the use of computer generated graphics, TA31RCO-A4, M16-A4 and an assistant instructor and your student handouts.

INSTRUCTOR NOTE

Explain to the students the procedure for completing the Instructional Rating Forms (IRFs). Inform students that an instructor will collect the IRFs once the entire period of instruction, to include performance examination, has been completed.

5. EVALUATION. You will be evaluated on this lesson through a PE on TD-___. To achieve mastery you must properly Zero Rifle Combat Optic by achieving a shot group of seven minutes of angel.

6. SAFTEY/CEASE TRAINING (CT) BRIEF. We are all safety officers. If you observe an unsafe situation during this period of instruction, inform one of your Combat Instructors or me and we will address the problem. In the event that the building must be evacuated, we will all move in an orderly manner to the assembly area located ____________________, where your Platoon Commander will conduct a personnel and weapons count and then you will be passed further directions as needed. Additional safety measures will be discussed during the practical application period of this lesson.

(ON SLIDE #2)

TRANSITION: Are their any questions regarding anything I’ve covered up to this point? (Pause and receive any questions) I encourage all of you to take your own notes in your student handouts. Let's begin by discussing the characteristics of the RCO.

BODY (24 MIN)

(ON SLIDE #3)

1. RIFLE COMBAT OPTIC. (5 MIN)

a. The TA31RCO RIFLE COMBAT OPTIC (RCO). is a 4x 32mm optic that does not require battery power. It is calibrated to accommodate bullet drop, thereby eliminating the need for mechanical elevation adjustments.

(ON SLIDE #4))

(1) The elevation adjuster is located on top of the RCO. It is used for adjusting the elevation.

(2) The eye lenses are located at the back of the RCO. They are used for magnification and protection of the RCO.

(3) The fiber optic is located forward of the elevation adjuster on top of the RCO and is used for gathering light for the RCO.

(4) The root prism is located inside the RCO in-between the eye lenses and the elevation adjuster. It is used for reflecting the image off of the objective lens, to the eye lenses, to the human eye.

(5) The windage adjuster is located on the right side of the RCO as you are looking through the eye lenses. It is used for adjusting right and left.

(6) The objective lens is located in the front of the RCO. It is used for magnifying and protection.

(ON SLIDE #5)

b. The RCO is a compact dual source illuminated telescopic sight. A fiber optic collects ambient light during the day, and a tritium lamp lights the pattern in low light conditions. The tritium lamp glows brightly for 12 years. The illuminated chevron pattern reticule has horizontal lines allowing for range estimation out to 800 meters.

(ON SLIDE #6)

c. Bindon Aiming Concept (BAC). This highly advanced concept uses the “both-eyes” aiming method. When the weapon is being moved, it appears that the image is unmagnified, permitting extremely rapid target acquisition. As soon as the weapon movement is stopped and the shooter is close to the proper aim on target, the magnification of the image becomes apparent permitting greater shooting accuracy with higher hit ratios.

(ON SLIDE #7)

d. Features And Benefits. The RCO has a multi-layer coated glass element with forged aircraft aluminum alloy housing. It is precision machined to exacting tolerances. It is also hard-anodized to match the upper and lower receiver of the service rifle. Because only the prism housing moves, the RCO is much more rugged than conventional designs. It includes the Flat Top Adapter ideally suited for mounting on the M16A4.

(ON SLIDE #8)

e. RCO Specifications. Fiber optic provides daylight illumination and tritium illuminates the reticle in low light. The ranging reticle is calibrated for 5.56mm (.223 cal).

(ON SLIDE #9)

(1) The magnification of the RCO is 4 power or 4 times the actual size.

(2) The length of the RCO is 5.8 in.

(3) The weight of the RCO is 9.9 oz.

(4) The field of view is 36.6 ft. at 100 yards or 12.7 meters at 100 meters.

(5) The adjustment for the RCO is 3 clicks per inch at 100 yards.

(6) The chevron width at the base is 19” at 300 meters. This allows range estimation for human sized and silhouette targets because 19” is close the width of a man’s shoulders.

(ON SLIDE #10)

f. Tritium Activity. The RCO has 100 mill curie radiation in one source. This is less radioactive material than that found in wristwatches illuminated with tritium.

(ON SLIDE #11)

TRANSITION: We have just discussed the RCO nomenclature and characteristics. Are there any questions over anything we’ve covered? (Pause and receive questions) If there are no (more) questions for me, I have a few for you.

QUESTION: What is the magnification power of the RCO?

ANSWER: 4 times the actual size.

QUESTION: The elevation adjuster is located where on the RCO?

ANSWER: On the top of the RCO.

_______________________________________________________________________________________________________________________________________________________________________________________________

Next, we will discuss how the RCO improves marksmanship.

(ON SLIDE #12)

2. MARKSMANSHIP IMPROVEMENT USING THE RCO. (2 MIN)

a. In addition to easily learning to use it, shooters:

(1) Engaged all targets more accurately with the optic.

(2) Doubled scores during live fire.

(3) Improved measurably at ranges beyond 250 meters. This occurs for both known and unknown distance courses of fire.

(4) Improved poor shooter performance in all courses of fire.

(5) Improved first round hit of targets at unknown distances as compared to iron sights.

(ON SLIDE #13)

TRANSITION: We have just discussed marksmanship improvement using the RCO. Are there any questions over anything we’ve covered? (Pause and receive questions) If there are no (more) questions for me, I have a few for you.

QUESTION: What is improved at unknown distances when using the RCO as apposed to iron sights?

ANSWER: First round hits on targets

QUESTION: If a Marine is a poor shooter, will their performance improve with the RCO?

ANSWER: Yes.

________________________________________________________________________________________________________________________________________________________________________________________________

Next, we will discuss combat ID improvement using the RCO.

(ON SLIDE #14)

3. COMBAT ID IMPROVEMENT USING THE RCO. (2 MIN)

a. The Optic Enhances The Ability Of The Individual To:

(1) See into / through shadows, windows, foliage.

(2) ID enemy vs. noncombatant vs. friendly. This reduces the potential for fratricide.

(3) Acquire and engage partially camouflaged targets at ranges beyond 300 meters.

(4) Acquire and engage targets in low light conditions when targets cannot be seen with the naked eye through iron sights.

(ON SLIDE #15)

TRANSITION: We have just discussed combat ID improvement using the RCO. Are there any questions over anything we’ve covered? (Pause and receive questions) If there are no (more) questions for me, I have a few for you.

QUESTION: How does the RCO reduce the potential for fratricide?

ANSWER: By improving the identification of enemy, noncombatant, and friendly individuals.

QUESTION: Would the RCO be helpful in highly wooded areas? Why or why not?

ANSWER: Yes, because it improves visibility into and through shadows, windows, and foliage.

________________________________________________________________________________________________________________________________________________________________________________________________

Next we will discuss the procedures for zeroing the RCO.

(ON SLIDE #16)

4. RCO ZEROING PROCEDURES. (5 MIN)

a. Place standard zero target at 36 yards.

b. Establish a good supported shooting position.

c. Use 300 meter aim point on the reticle. (This is the tip of the vertical post.)

(ON SLIDE #17)

(ON SLIDE #18)

d. Put it on the center of mass.

e. Fire a three round group.

f. Observe impacts on zero targets.

g. Assess elevation and wind-age adjustments.

(ON SLIDE #19)

(1) Corrections. One (1) click of wind-age or elevation moves the strike of the bullet one-third (1/3) inch per each 100 meters of range. Move the elevation adjuster clockwise it will move the strike of the round up. Move the wind-age adjuster clockwise it will move the strike of the round to the left.

(a) 3 clicks move the bullet strike 1 inch at 100 meters.

(b) 1 click moves the bullet strike 1 inch at 300 meters.

(ON SLIDE #20)

(c) Shoot another three round group and again assess and make corrections. Do this until shooter achieves point of aim / point of impact hits on target.

(2) When the shooter is able to confirm his zero. He must do so at ranges of 100 meters or at 300 meters. He must confirm using the appropriate aiming point of the sight. The tip of the chevron will be used for 100 meters and the tip of vertical post for 300 meters.

(ON SLIDE #21)

TRANSITION: We have just discussed zeroing the RCO. Are there any questions over anything we’ve covered? (Pause and receive questions) If there are no (more) questions for me, I have a few for you.

QUESTION: Three clicks of the elevation adjuster moves the strike of the round how many inches at 100 meters?

ANSWER: 1 inch

QUESTION: One click of the wind-age adjuster moves the strike of the round how many inches at 300 meters?

ANSWER: 1 inch

________________________________________________________________________________________________________________________________________________________________________________________________

Next we will discuss combat aiming points.

(ON SLIDE #22)

5. COMBAT AIM POINTS. (5 MIN)

a. The RCO reticle gives you aim points for different distances out to 900 meters.

(1) The tip of the chevron is your aim point at 100 meters.

(2) Right under the tip of the chevron is your aim point at 200 meters.

(3) The tip of the vertical line on the reticle pattern is your aim point at 300 meters.

(4) The first horizontal line marked with a number four is your aim point at 400 meters.

(5) The second horizontal line is your aim point for 500 meters.

(6) The third horizontal line marked with a number six is your aim point for 600 meters.

(7) The fourth horizontal line is your aim point for 700 meters.

(8) The bottom horizontal line is your aim point for 800 meters.

(ON SLIDE #23)

6. RANGE ESTIMATION PROCEDURES. (5 MIN)

a. With the chevron across the chest indicates 300 meter range to the target.

b. With the 4 line across the chest indicates 400 meter

range to the target.

(ON SLIDE #24)

TRANSITION: We have just discussed combat aiming points and range estimation procedures. Are there any questions over anything we’ve covered? (Pause and receive questions) If there are no (more) questions for me, I have a few for you.

QUESTION: The retical in the RCO gives you accuracy out to how many meters?

ANSWER: 900 meters

QUESTION: The first horizontal line marked with a four is used for what range?

ANSWER: 400 meters

(ON SLIDE #25)

SUMMARY (3 MIN)

During this period of instruction we have covered nomenclatures, characteristics, features and benefits, Bindon Aiming Concept, specifications, marksmanship improvement, combat ID improvement, zeroing procedures, combat aiming points, and range estimation procedures. I am confident with the information that you received today that you will be able to move down range and effectively zero you RCO. Please respond to the questions or make comments on your Instructional Rating Forms, as appropriate. I will collect all of the forms as you finish with them.

INSTRUCTOR NOTE

Provide the students with instructions regarding what to do and where to form in preparation for the next training event.

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