2-25 M2A1 .50Cal study guide

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Questions and Answers

Characteristics of the M2A1 .50Cal

Belt fed, Recoil operated, Air cooled, Crew serve, Capable of single shot as well automatic fire, Capable of right and left feed

Weight of Gun

84 pounds

Weight of Receiver

58 pounds

Weight of Barrel

26 pounds Signup and view all the answers

Weight of Tripod Mount M3 (with T&E and Pintle with Bolt)

44 pounds Signup and view all the answers

Total Weight of M2A1

128 pounds Signup and view all the answers

Length (Overall)

65 inches Signup and view all the answers

Length of Barrel

45 inches Signup and view all the answers

Max Range

7400 yards or 6767 meters Signup and view all the answers

Max Effective Range

2000 yards or 1829 meters Signup and view all the answers

Muzzle Velocity

3050 FPS Signup and view all the answers

Grazing Fire

700 meters Signup and view all the answers

Single Shot

Barrel change at the end of the firing day or if the barrel is damaged Signup and view all the answers

Sustained Rate

Less than 40 rpm, 6 to 9 round bursts, 10 to 15 second intervals, barrel change every 500 rounds or if the barrel is damaged Signup and view all the answers

Rapid Fire

More than 40 rpm, 5 to 10 second intervals, barrel change every 300 rounds or if the barrel is damaged Signup and view all the answers

Cyclic

450 to 600 rpm, barrel change every 200 or if the barrel is damaged Signup and view all the answers

9 Major Components: Backplate Assembly

Houses trigger and buffer tube and contains a trigger block that slides to select fire or safe. The trigger block and flat spring are secured onto the backplate with two shoulder screws and non-electrical wire. Signup and view all the answers

9 Major Components: Rear Sight

Used to zero and accurately sight Signup and view all the answers

9 Major Components: Barrel

Has rifling to give bullet spin for accuracy and chamber for firing the cartridge Signup and view all the answers

9 Major Components: Front Sight

Used to zero and accurately sight Signup and view all the answers

9 Major Components: Receiver

Houses the internal components and serves as support for the entire machine gun Signup and view all the answers

9 Major Components: Retracting Slide Handle

Used for cocking the machine gun Signup and view all the answers

9 Major Components: Buffer Tude Sleeve

Locks the bolt latch lease in the open position to permit the machine gun to fire automatic or the unlocked position for single shot Signup and view all the answers

9 Major Components: Trigger

Controls the firing of the machine gun Signup and view all the answers

9 Major Components: Cover

Feeds the belt and position and holds the cartridges for chambering Signup and view all the answers

9 Major Components: Trigger Block

Slides to select fire or safe Signup and view all the answers

Name the 8 Unique Parts

Knurled Plain Nut, Barrel Support, Barrel Carrying Handle Assembly, Barrel Extension Assembly, Breech Lock, and Backplate Assembly Signup and view all the answers

What are the 3 Mounts?

MK93 Mod 0, MK93 Mod 1, and M6/M7 Pedestal Signup and view all the answers

What is the Front Sight?

Semi fixed blade type with cover Signup and view all the answers

What is the Rear Sight?

Leaf-Type rear sight graduated in both yards and mils for ranges from 100 to 2600 yards, and from 0-62 mils Signup and view all the answers

What is the Use of the Windage Knob?

Permits deflection changes of 5 mils left/right of the center Signup and view all the answers

Condition 4

Bolt forward, no rounds in chamber, no round on feed way, cover closed, weapon on safe Signup and view all the answers

Condition 3

Bolt forward, rounds on feed way, first round engaged by belt holding paw, no round in the chamber, cover closed, weapon on safe Signup and view all the answers

Condition 2

Bolt forward, chamber empty, rounds on feed way with first round against the cartridge stop, grasped by extractor, and weapon on safe (half load) Signup and view all the answers

Condition 1

Bolt forward, round in the chamber, rounds in the feed way, cover closed, and weapon on safe (Full Load) Signup and view all the answers

The 3 Lubricants for M2A1 .50 Cal

(CLP) Cleaning Lubricant Propectants, (LAW) Lubricating Artic Weapons, and (LSA) Lubricant Weapons Semi-Fluid Signup and view all the answers

Temperature for CLP or Cleaning Lubricant Protectant

10 degrees or higher Signup and view all the answers

Temperature for LAW or Lubricating Artic Weapons

10 degrees or lower Signup and view all the answers

Temperature for LSA or Lubricating Weapon Semi-Fluid

10 degrees or higher Signup and view all the answers

The Ammunition of the M2A1 .50 Cal comes packed with linked belts of 100 rounds

True (A) Signup and view all the answers

Does the Ammunition of M2A1 .50cal Come Linked with a Ratio of One Tracer to Every 4-Ball Round?

Yes Signup and view all the answers

Can You Fire the M903 or M962 Over Heads?

No, it can cause potential injures Signup and view all the answers

M33 Ball Cartridge

bronze tip, used against personal, light material targets and marksmanship Signup and view all the answers

M17 Tracer cartridge

Red, maroon, or orange tip, used for observing fire, incendiary effect, and signaling Signup and view all the answers

M8 Armor Piercing Incendiary (API) Cartridge

Aluminum colored, or aluminum ring with blue tip, used when a combination of piercing and incendiary effect is desired Signup and view all the answers

MK257 Mod 0 Armor Piercing Incendiary Tracer (APIT) Cartridge

Red colored, or it has an aluminum ring, used when a combination of piercing and incendiary effect Signup and view all the answers

MK211 Mod 0 Armor Piercing Incendiary Cartridge

Aluminum ring with a green tip, used against light armored vehicles and aircraft, provides improved penetration performance against enemy personnel and light armor vehicles Signup and view all the answers

M20 Armor Piercing Incendiary Tracer Cartridge

Aluminum ring with red tip, used for armor piercing incendiary effects with an additional tracer feature Signup and view all the answers

M903 Sabot Light Armor Penetrator (SLAP)

Sliver tip with a plastic, .30 caliber tungsten round wrapped in a plastic sabot or shoe to make it .50 caliber, smaller size and weight, fires at a higher velocity, and lower trajectory than normal armor-piercing rounds, suited for fast moving targets Signup and view all the answers

M962 Sabot Light Armor Penetrator Tracer (SLAPT)

Pointed sliver tip with red plastic sabot, .30 caliber tracer round same trajectory as SLAP round Signup and view all the answers

M1A1 Blank Cartridge

Crimpled tip, lack of projectile and used for simulated firing Signup and view all the answers

M858 Plastic Practice Ball Cartridge

Blue cartridge with a blue tip, used for scaled range training purposes, where range restrictions limit or prohibit the use one of the other types of live ammunition Signup and view all the answers

M860 Plastic Practice Tracer Cartridge

Blue cartridge with red tip, used for scaled range training to permit visible observation of the bullet's in-flight path or trajectory to the point of impact, use with the M858 plastic practice ball cartridge Signup and view all the answers

M2 Dummy

Lack of markings and holes in the cartridge case, used for crew drills, practice in loading, and unloading the gun Signup and view all the answers

Flashcards

M2A1 .50 Cal Characteristics

Belt fed, recoil operated, air cooled, crew serve, capable of single shot and automatic fire, right and left feed.

Why barrel & receiver exposed?

To permit air cooling.