Executive Doughnut

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The Executive Doughtnut is a 1 pound Anti-Matter Bomb.  Due to it's small size it can be deployed without the knowledge and can destroy everything in a 550 mile radius (a land mass the size of Texas).  Evermist Law restricts the use and number of these weapons, as they can erase a nation from the map.  Only 13 can exist at any one time and their whereabouts know only to ten people loyal to the King.  The doughnut can only be deployed in the gravest of circumstances and upon deployment the crown is to be abjucated to the next Heir in line.

Anti-Missle System

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The Anit-Missile System is used to destroy missiles before they strike their target. This is accomplished by using a short ranged rapid firing weapon which shoots at the missiles.

Autocannon

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An Autocannon is a type of rapid-firing, auto-loading direct-fire ballistic weapon, firing HEAP (High-Explosive Armor-Piercing) or kinetic rounds at targets in bursts. It is, basically, a giant "machine gun" that fires predominantly cased explosive shells though models fireing saboted high velocity kinetic energy penetrators or caseless ordnance do exist.  Autocannons produce far less heat than energy weapons, but are considerably bulkier and dependent upon limited stores of ammunition.

Autocannons range in caliber from 20mm up to 120mm or larger and are loosly grouped according to their damage vs Armor. The exact same calibre of shell fired in a 100 shot burst will have a shorter effective range than when fired in a 10 shot burst due to recoil and other factors.

Gauss Rifle

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The Gauss Rifle utilizes electromagnets to propel an excessively damaging 125kg slug to long distances, making it a devastating and lethal weapon. Unlike traditional ballistic weapons, the Gauss Rifle lacks any combusting propellant or other material, making the heat output almost unnoticeable. However, its effectiveness is limited by the heaviness of both the rifle and its ammunition, as well as the possibility that Gauss Rifles will explode upon suffering a critical hit.

Laser

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"Laser" stands for "Light Amplification by Stimulated Emission of Radiation", or a device that focuses an amplified beam of light on a small surface area. Lasers cause damage by firing an intense beam of light at a target, flooding concentrated energy in the form of heat, which can melt material and overwhelm heat-sensitive electronics.

Pulse lasers differ from traditional laser weaponry, in that instead of firing one powerful beam, they maintain laser beams fired off in quick succession. While offering an overall increased rate of fire, the heat output also increases accordingly. Pulse lasers increase damage because they allow vaporized armor to dissipate from the location of damage. This allows subsequent pulses to reach the target area without being diffused by the vapor.

LB 10-X Autocannon

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The LB 10-X Autocannon is essentially a 'Mech-mounted shotgun, capable of firing special "cluster rounds" that split apart after being fired, allowing the weapon to either spread damage out or focus damage on a small area, depending on the range. LB-X Autocannons are able to use either the special cluster rounds or standard autocannon rounds. The LB 10-X Autocannon, having a higher caliber, causes higher damage than lower-caliber autocannons, though it is limited to medium ranges.

Missiles

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Streak Missiles:
Streak technology ensures that all missile tubes acquire a target lock before its missiles fire. This improvement upon standard Short-Range Missiles conserves ammunition and eliminates unnecessary heat buildup.

LRM:
Long-Range Missiles provide military units wit decent far-reaching punch.  The number found after LRM is how many it fires at once.

SRM:
Short-Range Missiles pack more power into the missile than almost any other kind. They lack sophisticated guidance systems, so they must deliver their punch at short range

MML:
The Multi-Missile Launcher is capable of firing both short-range missiles and long-range missiles, including any special munitions designed for them.

Particle Projection Cannon (PPC)

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The Particle Projector Cannon (or PPC) is a unique energy weapon. PPCs fire a concentrated stream of ions at a target, causing damage both thermally and through impact, causing high amounts of damage to any form of armor. The lethality of the weapon rivals that of a higher-caliber autocannon, yet the ion beam extends to much farther ranges than autocannon fire, though PPCs generate large amounts of waste heat. 

Evermist employs many different sizes:

PPC Rifle (Used by Heavy Dragoon Troopers and Angels of Avalon)
Light PPC (Mounted on vehicles)
Medium (Mounted on Several Mechs and AeroSpace Fighters)
Heavy PPC (mounted on Heavy and Assualt Class Mechs)
Capital PPC (Mounted on Orbital Command Ships and Space Stations)