7.62x51 NATO

From Halopedia, the Halo Wiki

7.62x51mm NATO is a round used by the UNSC in their MA5 Series of assault rifles. It was originally developed by the NATO organization in the 20th Century. It is used due to its reliability and heavy power.

As it is used with the MA5 rifles, which are one of the most common armaments in the Marine Corps, it is probably the most commonly fired and used round in the UNSC ground forces. It can be regularly found in packs littered around battlefields.

The round is effective against infantry, especially against unarmored or unshielded opponents. Energy shields drastically reduce the effectiveness of this round, as it does not have enough kinetic energy to significantly drain the shields. The round is also largely ineffective against vehicles, as it is not significantly armor-piercing. Massed fire from a squad of Marines, however, is enough to drain shields and destroy or disable most vehicles short of tanks due to the sheer number of rounds fired. Thus, this is primarily an infantryman's round for use against other infantry.

[edit] History

There is more information available on this subject at 7.62x51 NATO on the English-language Wikipedia.

The 7.62x51mm NATO was originally developed by NATO, an organization of national governments, in the middle of the 20th century. It was developed to be reliable when used in fully automatic weapons, to have a large punch, and to standardize round size between governments. It replaced a variety of smaller ammunition and largely achieved the goals of development. It is a battle rifle round in the 20th century, and is fairly common.

[edit] Trivia

• This round was developed by the modern day, real life organization NATO, which stands for North Atlantic Treaty Organization.
• In Halo: Combat Evolved, this round is labeled "M118 7.62x51mm FMJ-AP."
  

  

  The labeling on a pack of 7.62x51mm ammunition.
  This means that the rounds are armor-piercing and have a solid outer coat of metal.
• It takes 16 rounds to kill a fully-shielded player in Halo 3 multiplayer.

List of UNSC Infantry Weapons
Pistols and SMGs		M6 series (M6C Magnum Sidearm (SOCOM) · M6D Personal Defense Weapon System · M6G Personal Defense Weapon System · M6J Carbine) · M7/Caseless Submachine Gun · M7S Submachine Gun
Combat Rifles		MA5 Series (MA5B Assault Rifle · MA5C Assault Rifle · MA5K Carbine) · MA3 Assault Rifle · MA2B Assault Rifle · BR55 Battle Rifle · BR55HB SR Battle Rifle
Shotguns		M90 Shotgun
Sniper Rifles		SRS99C Sniper Rifle · SRS99D Sniper Rifle · Model 99 Special Application Scoped Rifle
Rocket Launchers		M19 SSM Rocket Launcher · M19-B SAM Missile Launcher · M41 SSR MAV/AW
Machine Guns and Support Weapons		AIE-486H Heavy Machine Gun · M247 General Purpose Machine Gun · Model 99 Special Application Scoped Rifle · NA4 Flamethrower · M7057/Defoliant Projector · LAU-65D/SGM-151 Missile Pod · Weapon/Anti-Vehicle Model 6 Grindell/Galilean Nonlinear Rifle
Grenades and Explosives		102mm HEAT · C-7 Foaming Explosive · C-12 Shaped Charge · Fougasse · Fragmentation Grenade · M301 40mm Grenade Launcher · M383C Demolition Kit · Napalm Grenade · Satchel Charge · Smoke Grenade · Sonic Grenade · Thermite-Carbon Cord · Thermite Grenade · XM510 Multishot Grenade Launcher
Ammunition Used		M225 SAPHE · 12.7x99mm · 14.5x114mm · 0.390 caliber · 0.450 caliber · 7.62x51mm NATO · 9.5x40mm M634 X-HP-SAP · MUTA-AP-09334 · M443 Caseless FMJ · Soellkraft 8 Gauge Shell