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Infantry ALC marksmanship
Convection cooling - Correct Answers ✔️ ✔️ Requires the presence of a moving air current. The moving hair has greater potential to carry away heat. The hand guards and ARS of the rifle and carbine are designed to facilitate air movement. Minute of angle (MOA) - Correct Answers ✔️ ✔️ An angular unit of measure equal to 1/60th of a degree. More commonly used when describing the distance of change required when zeroing a weapon. Equals 1.047 inches per 100 yds. Can round this to 1 inch at 100 yds or 1.1 at 100 meters. Situations which IR can see better - Correct Answers ✔️ ✔️ Smoke and Dust
M68 disadvantage - Correct Answers ✔️ ✔️ Lacks a bullet drop compensator or other means to determine accurate range to target beyond 200m. Thermal sights five functional groups - Correct Answers ✔️ ✔️ 1. Objective lens
- Detector assembly
- Sensor assembly
- LCD array/eyepiece
- User controls Sight alignment - Correct Answers ✔️ ✔️ The relationship between the aiming device and the firer's eye. Sight picture - Correct Answers ✔️ ✔️ The placement of the aligned sights on the target.
- Ready (ready up) A hold - Correct Answers ✔️ ✔️ Soldier's calculated aim point. Downrange wind indicators - Correct Answers ✔️ ✔️ 0- mph=hardly felt but smoke drifts 3-5 mph=felt lightly on the face 5-8 mph=keeps leaves in constant movement 8-12 mph=raises dust and loose paper 12-15 mph= small trees sway To estimate the effects of the wind on the shot, soldiers need to determine what three windage factors? - Correct Answers ✔️ ✔️ 1. Velocity
- Direction
- Value Upper receiver consists of what? - Correct Answers ✔️ ✔️ Barrel assembly
-barrel -flash hider or compensator -sling swivel -front sight assembly -adapter rail system (ARS) -slip ring -ejection port -ejection port cover -forward assist assembly
- Chamfering
- Locking
- Firing
- Unlocking
- Extracting
- Ejecting
- Cocking Three methods to reduce thermal stress on a weapon - Correct Answers ✔️ ✔️ 1. Radiational cooling
- Conduction cooling
- Convection cooling
Radiational cooling - Correct Answers ✔️ ✔️ Allows for the dissipation of heat into the surrounding cooler air. This is the least efficient means of cooling, but is common to most small arm weapons, including the rifle and carbine. Conduction cooling - Correct Answers ✔️ ✔️ Occurs when a heated object is in direct physical contact with a cooler object. Conduction cooling on a weapon usually results from high chamber operating temperatures being transferred into surrounding surfaces such as the barrel and receiver of the weapon. Accuracy - Correct Answers ✔️ ✔️ The ability to hit a desired target or point of aim. Precision - Correct Answers ✔️ ✔️ The ability to place the shot group and the desired point of impact.
- Ensure positive identification of the target and its surroundings. Weapon safety status (wss) - Correct Answers ✔️ ✔️ The readiness of a soldier's weapon. Green statua - Correct Answers ✔️ ✔️ The weapon's magazine is removed, its chamber is empty, its bolt is locked open or forward, and the selector is set to SAFE. Amber status - Correct Answers ✔️ ✔️ A magazine is locked into the well of the weapon, the bolt is forward on an EMPTY chamber, the ejection port cover is CLOSED, and the selector should be set to SAFE. Red status - Correct Answers ✔️ ✔️ The weapon's magazine is inserted, a round is in the chamber, the bolt is
forward and locked, the ejection port cover is closed, and the selector is set to SAFE. Weapon's control status (wcs) - Correct Answers ✔️ ✔️ A tactical method of fire control given by a leader that incorporates the tactical situation, ROE for the area of operations, and expected or anticipated enemy contact. WCS; weapon's hold - Correct Answers ✔️ ✔️ Engage only if engaged or ordered to engage. WCS; weapon's tight - Correct Answers ✔️ ✔️ Engage only if target is positively identified as enemy. WCS; weapon's free - Correct Answers ✔️ ✔️ Engage targets not positively identified as friendly.
Overmatch component; engagement range - Correct Answers ✔️ ✔️ Provide the soldier with weapons, aiming devices, and ammunition capable of striking and defeating a threat at a greater range than the adversary can detect or engage the friendly force with effective fires. Overmatch component; limited visibility - Correct Answers ✔️ ✔️ Provide the soldier to make operations during limited visibility an advantage through technology and techniques, and compound their adversary's disadvantages during those conditions. Overmatch component; precision - Correct Answers ✔️ ✔️ Provide a weapon and ammunition package that enhances the soldier's consistent application of shots with a level of precision greater than the adversary's.
Overmatch component; speed - Correct Answers ✔️ ✔️ The weapon, aiming devices, the accessories a soldier employs must seamlessly work in unison, be intuitive to use, and leverage natural motion and manipulations to facilitate rapid initial and subsequent shots during an engagement at close quarters, mid-, and extended ranges. Overmatch component; terminal performance - Correct Answers ✔️ ✔️ Ensures that precise shots delivered at extended ranges provide the highest probability to defeat the threat through exceptional ballistic performance. True or False: The soldier must be able to detect, acquire, and identify targets at ranges beyond the maximum effective range of their weapon and ammunition - Correct Answers ✔️ ✔️ True
other assemblies, sub assemblies and parts to create a component. Weapon system parts - Correct Answers ✔️ ✔️ Individual items that perform a function when attached to a subassembly, assembly, or component that serves a specific purpose. Two major components of a weapon - Correct Answers ✔️ ✔️ Upper and lower receiver.
