The use of giant robots for combat purposes was inevitable. The bulk of these weapons provide destructive capabilities akin to those offered by an armored car or other light armored fighting vehicle.

Column 1 (top to bottom)

BS-2C Telescoping Electromagnetic Baton
A telescoping shock baton intended to immobilize and knock down other Metal Frames, typically wielded by Metapol (Metal Police) units. Applied correctly, it can smash the joints on an opposing frame and fry its electrical system. Using it on Azoreans is the very definition of "excessive force" and will essentially reduce them to blueberry jam.

FP-4A/B Revolver Howitzer (20mm and 25mm Low Velocity)
This 6-shot short-barreled weapon is popular with Metapol units due to its simplicity, relatively low cost, and effective enforcement of fire discipline. The typical munition is a low-velocity hollow point or frangible round intended to not overpenetrate on unarmored Frames. In practice, it tears through non-reinforced construction like a chainsaw through butter. Typical calibers are 20mm and 25mm, and a speedloader is available, much to Ota's delight. It fires cased rounds only.

There is a custom-made 30mm model that carries five rounds, but unless you're fighting some sort of giant monster, there's no reason to carry this.

FP-7C Gyrojet Handy Howitzer (25mm recoilless rocket)
A high-velocity low-recoil rocket pistol that fires spin-stabilized shells. It's relatively accurate and offers a high round velocity at motor burnout, but is limited up close.

FP-3D/E Auto-Howitzer (20mm and 25mm Low Velocity)
An autoloader "pistol" that fires the 20mm and 25mm low velocity rounds. A sidearm for giant robots. Both cased and caseless ammunition are available. Caseless rounds are popular in space due to the reduction in hot brass and debris, while cased rounds are more resistant to cookoff and can be recycled.

FR-2C/D Sub-Machine Howitzer (20 and 25mm Low Velocity type/coaxial 6mm or 8mm Gatling MG)
This weapon combines the low velocity howitzer rounds with a. Very popular with private security companies and mercenary operators, regarded as overkill by Metapol units. It has a coaxial three-barreled machinegun similar to a downsized GAU-19 and a selectable fire rate

FR-4C Assault Howitzer (25mm High Velocity/coaxial 6mm or 8mm MG)
This weapon is analogous to the assault rifles carried by conventional infantry, but is sized for a Mini Mecha. Its munitions are proper API and HEI shells, effective against light AFVs and the optics of heavier equipment. In addition, it has a coaxial weapon for suppressive fire against soft targets and infantry. Vulcan select!

FR-8B Sniper Cannon (37mm High Velocity)
A high-powered cannon, similar to an antimateriel sniper rifle. Devestating against light and some medium AFVs, and is unaffected by active protection systems.

FR-3 Low Pressure Howitzer (50mm Low Velocity Shell)
The FR-3 is a descendant of a modified punt gun employed by a crazed frame jockey many decades ago. Common rounds include rubber, airburst flashbang, and conventional buckshot in addition to a glaser or frangible slug, but are rarely used due to the risk of making an existing civil disturbance worse. Military rounds include a 50mm AP slug, flechette cartridge, smoke, airburst grenades, and 50mm HEDP grenade.

FC-8A Low Pressure Mortar (75mm Low Velocity Shell)
An overgrown, pump-action grenade launcher that fires low velocity explosive rounds, flechette, and airburst devices in addition to more exotic devices. Useful as a smallish demolition gun and artillery piece, but is feeble against proper main battle tanks and up-armored light tanks.

FC-3D Recoilless Autoloading Cannon (105mm "recoilless" shell)
This recoilless gun has a revolver-style mechanism capable of holding six rounds. Its anti-tank shells are a viable match for most AFVs and can reduce Frames to scrap with a single hit. It also can be loaded with antifortification shells or a muzzle-loaded demolition charge. There is a Special Muniton available for this device, which is muzzle-loaded and propelled by a special blank round. At least, well, such a device was available back during the Third War era. In addition, a 125mm three-shot version of this weapon is available.

Column 2
FR-1D Minigun (8mm Gatling MG)
Another very early Metal Frame weapon sometimes carried for suppressive fire purposes and notorious for its use by the Blue Shoulders on their customized Frames. Due to its mounting, it isn't very flexible with regard to aiming. (I might take this one out or figure out how to casemate or pod mount it so it's capable of doing more blanketing the area in front of you in a shower of hot steel or tungsten.)

ML-2A "Sidecar" Missile Pod (100mm missile)
This two-shot missile pod can be fitted to the side or backpack mount hardpoints on a Metal Frame, and provides an effective fire-and-forget weapon for use against armored vehicles and some structures.

Column 3
ML-1A Handy Rocket Launcher (84mm rocket)
This 17-round launcher fires 84mm rocket rounds. These munitions are unguided, which makes them invulnerable to soft kill systems, but hard kill systems are still an effective countermeasure. You could always ripple-fire and see if the old Macross Missile Massacre technique can render a target point defenseless...

ML-1B Handy Missile Launcher (100mm missile)
This seven-round missile launcher fires the same fire-and-forget antitank munitions that can be loaded into the Sidecar, and a back-mounted model is available.

ML-3A Heavy Missile Launcher (150mm missile)
This heavy missile launcher has a pair of high-powered anti-armor missiles with fire-and-forget capability capable of busting a main battle tank four or five kilometers away. Like all guided missiles, it is vulnerable to soft kill and hard kill systems.

FF-1B Flamethrower
A pressure fed flamethrower with coaxial machine gun This weapon is listed, but the last widespread use of incendiary weapons was during the Fourth War, two decades before the introduction of Frames. The biggest risk to the operator is what the enemy will probably do to you if you're captured, the tanks being hit just covers you in burning fuel.

There's no escaping from the nomenclature problem posited in Minipato.

I'm going to remove the iron sights, they're superfluous for something that can't sight along the barrel like a human can, and they're typically controlled using indirect methods.

Artwork © of me