3 types of major tech for the story will be covered. While this is not tech in the Lost Realm, it's a big chunk. Further, I will explain how the equipment from another universe will respond to... Well everything.

The first tech type is of course, the equipment. This can be split into mounts (vehicles), weapons, and utilities (including some armor)

Weapons
Lost Realm weapons can be divided into 5 discernable sets.

First, standard militant.
Militant weapons are simply just souped up weapons we as humans know all about. Shotguns, railguns, gatlings, assault rifles, rocket launchers, etc.

Next, Energy weapons.
Energy weapons are lightweight, but have lacking range. These weapons include:
The Energenix spray shot. (Shotgun)
Energenix semibeam cannon. (Minigun)
Energenix antistrafe. (Assualt rifle)
Energenix volt cannon. (Bazooka)
Energenix multi-tesla. (Let's see if you guess...)
Energenix repeater. (Handgun)
Energenix wavelength. (Warhammer)
Energenix shockwave. (Battleaxe)
Energenix powerblade. (Broadsword)

Why do they all start with Energenix? Well, it's like a company, that's the line that makes energy weapons. Energy weapons are used in classes for younger students. Having zero kickback, and being the only weapon where reloading isn't an issue, it's the best place to start. Many energy weapons come with solar panels, and lunar panels (uses moonlight), so they can shoot away when there are no clouds.

The next tier of weapons are the laser weapons. At this tier, some of the aforementioned characters have custom made weapons, as Laser has distinct advantages over then higher tiers. They include:
Trishot Beam cannon. (Bazooka)
Fancannon switchouts. (Handguns)
Heavy beam rifle. (Assualt rifle)
Clusterburst handcannon. (Shotgun)
Beamsaber. (Greatsword)
Lesser beamsaber. (Katana)
Pathcutter. (Scythe)
The Discoball. (Axel's AA handcannon)
Lightwaiver. (Slynella's flashbang holster)
Laser weapons have a very high armor penetration, and the longest range. In addition, most laser weapon attacks form an unbroken line, making it a little bit harder to dodge, as "around" stops being an option. This is also the reason laser weapons are the common loadout for spacecraft.

The next tier up are the common weapon for armymen, and the favorite weapon for most qualified shooters, including Axel. Plasma weapons.
Plasmetic Antiform Blaster. (Shotgun)
Plasmetic Termination Ray. (Bazooka)
Plasmetic Anti-Vehicle Shooter. (Rocket launcher)
Plasmetic Omnishot Blasters. (Handguns)
Plasmetic Surge Cannon. (Sniper rifle)
Plasmetic Area Rendition Striker. (Jacopo's Hammer... Thing?)
Plasmetic Legion Crasher. (Axel's Assault Rifle)
Plasmetic AA Downcaller. (Reyer's Spear)
Plasmetic is the brand lable for plasma weapons. The joke is that no medic can save you if one of these hits you. The true danger is to the user. Plasma weapons have a massive kick, and can often shoot wild, which endangers ones fellowship fighters. Of course, Plasma also happens to be the best thruster propellant known, so guess what every self respecting plane, ship, and even some boats use...

The last tier is unstable. Few have been made, fewer can actually use them. Nuclear weapons. No, the atom bomb kind, but close. At least if the battery ruptures.
Nuclear Assualt Rifle.
Nuclear Handcannon.
Nuclear Alteratives. (Handgun)
And that's it. One has to have high radiation resistance to even use one of these, and of course no one without the same resistance can even go near them. Hence, the impractically of these weapons in the army. The only upside is that one Nuclear Handgun can wipe out entire dominions, hands down. If only the shooter didn't lose their arm in the process. If they get lucky. And for a battery breach? Laser and Plasma will leak, but Nuclear will just basically nuke you where you stand. Not even Axel can survive a nuke at point blank without both Etheral Shift and Last Stand. Jacopo comes out fine however. His defense is absurd.

Next up is Vehicles.

No vehicle is made weak. So there are a few types.

SSL-V6 Kraken.
A powerful submarine, using Energy ion cannons and heavy plasma torpedoes to sink enemy crafts. Can endure being hit by a meteor twice without repair, uses laser boosters, and holds 80 passengers with 3 pilots.

AD-66 Attack Helicopter
Only one exists. Axel owns it. Loaded with Plasma rockets, lasers miniguns, and a potent ion beam, the AD-66 is a one machine fleet. Low durability, but a very fast flyer, using a plasma jet system to weave around trouble.

V7 Rover
Almost every driver has one. The V7 is a simple motorcycle, packing 2 laser blasters and the ability to morph into a hovercraft. The lifters are actually only energy, so the cycle can't fly.

V9 Rover
V8 was copyrighted by a juice company, so V9 was then next addition. All the higher ups in District 14 use these. The only difference from the V7 is twice the lasers, and having actual flight capability, albeit for a short time, only 2 minutes at once.

Soverity-42
A deadly jet fighter. The Soverity packs no guns, just missiles. A lot of missiles. Plasma and Laser rockets by the dozen, and twin energy rockets when the supply is out.

Purititian-0
The Purititian is a bomber. They aren't used much, because they drop mini atom bombs. And are saved for terrorists. The code of war and morality forbids it's use elsewise.

The Razor Scooter.
Take a freaking guess. Axel's youngest child liked the pink razor scooter so much, she had to have it. She thinks it's a scythe, don't tell her the truth.

Those are the known vehicles. For obvious reasons I didn't count jetpacks, or anything of that sort. They are utilities, after all.

Utilities.
Many gadgets are used as utility items. These include:
The Headcom standard release headset.
Everyone has one, most need it. While only equipped with lesser functionality, the Headcom is used to manage schedules, communicate with friends, manage inventory space (everyone also has a pocket storage unit), and actually play VR games. If you try in class though, guess who loses their charger...

The pocket Storage Unit.
Looks like a wristwatch, is actually a portal into a mini pocket universe. Is the minisomer everyone who hasn't entered the void storage unit thinks. Really it leads to a small room painted black. Really really dark black, with really resistant paint. Honestly, its an ongoing joke among teachers to see the shocked face of graduates seeing their unit from the outside.

A locater.
You leave, one gets put on automatically. For security, people say. Really it is, but the students can be sceptical.

These items are standard release. The high council (everyone in charge) get better toys.

The eyescreen.
It's the headset, without inventory management, but it shows stats, conditions, equipment, martial status, age, and literally anything you want it to about a target. Including things best left in the land of 18+... Reyer wasn't the same since... He looked at some teenagers browser history. (Who actually listens to those "18+" warnings?)

Earpiece.
Take a guess. But these are on private channels, for security, and secrecy.

Axels Arm.
Axels arm has a massive amount of functionality. For starters, it can change into a lava mortar, chain gun, tesla, or shredder. It has 4 grappling hooks attached, the fist can be shot as a projectile, the forearm can pull up a complex menu system to utilize to entire void storage unit, then shoulder gets a built in speaker and aux. Also his side shoots missiles, but who cares about that? He can only do that trick while topless.

Jacopo and Axel's organs.
Axel and Jacopo were listed as part robot. Well, neither has most organs. Both have a stomach unit that subs for the stomach, intestines, bladder, kidneys, liver, and everything else in the excretionary and digestive systems. It takes useful materials, utilizes them, and ejects everything else as Amalgam. Jacopo throws his away, but Axel uses it to heal in battle. It's kinda nasty to watch. He can take off an arm, and use it like a boomerang, while it is reattching, to choke out an opponent at 70 meters. Axel also has a mechanical eye and ear, but they don't do anything special. Expect the eye changes colors.  It's the right one.

The second tech type is the facility itself. The door in is unopenable without DNA keying. Once inside, sentry robots and DNA antipersonnel cannons are every 10 feet. The central sanctum is like a city square. It features a dimensional map, an interdimensional map, and most commonly, discount vocaloid. Yeah it's a stage. The back wall features a panel, and 4 huge gaps in the wall that look into time machinish rooms. Using the panel, which is the Void storage unit control, people can make rooms enter the slots. Thousands of rooms. While the square footage of the facility is only 7,000 square feet, there are over 1,000,000 square feet of rooms in the void storage unit. What this unit is is an empty dimension. Zero G, full of trash, all materials for everything, rooms, and random hobos. People live there. No it's not pleasant, but they do anyways. Moving about, you'll find the assembly line, with Creative Crafters, large benches, waiting to make things. The Prison is boring, just lots of random POWs and criminals. The zoo is the same area as the prison, full of animals, including baby dragons, and sharks. No one knows how they get there. Lastly, the dorms are located in another dimension. This one is open. Each dorm is 225 square feet, and has kitchen service.

The last tech is currency. District 14 uses credits. You gotta carry em around. Solver credits are worth one, good are worth 100, light blue are worth 10,000, and purple are worth 1,000,000. Of course, these credits can be out in a wallet. Most but them, because after you gather the needed 10,000 credits on a student "salary" (assuming they even work at all), you won't have much room in your dresser. Because it'll be in silver credits. The wallet connects you to a bank, which rounds up credits, makes change, and manages how many credits you have, without you carrying them around. Believe it or not, it's a pocket dimension. But nothing but credits can go in. The credits gas a special tracer no one can fake. That's how to filter works.

Finally, the question at least one person had. Technology from out of dimension, lacking in magic, is still subject to all magical movements. It is still nonliving matter, and only living matter can resist magic, and only certain types. Because this was found out AFTER the magic laws were written, it doesn't appear in the laws. Because no one was willing to update the laws. Because no one wants to fight a Valkrie for blood to write with. Because the most powerful man Alice's brother leads the Valkries. Big cause and effect.

A/N I'm positive that at some point, you may need to refer to the E.S. chapters. If you haven't guessed, E.S. stands for Explanation Station. Long titles don't work out, so an abbreviation was in order.

Feel free to get a reference at any time. Also, feel free to use these magic laws and stuff like that in you story. But the characters are mine, you need standard permission for those. And the weapons. And vehicles. Just ask before using. Please?