Just memorize your guns and ammos schematics and then use magic to manufacture them out of thin air. Sell them for gold and watch the fantasy world collapse due to hyper-efficient slaughter your guns brought to the world. Then come back to your original world with your metric tons of gold and watch the economy collapse as you dump your gold into the market.

Forget which bang stick to use.

Can you take 50K of ammo back with you?

That is the real question.

Edit: Oh, and a couple of spare barrels would be a good idea as well. Actually, at least three spares of everything.

sounds like GATE

Multiscam is useless when every other race has fkin infravision

A good option might be these high powered airguns strong enough to drop a moose. Like the .72cal Zeus, it has the same muzzle energy as an AK-47. As long as you can get your hands on lead, you can make your own ammo.

The AR-15 is probably the best all-around anti-personnel weapon ever devised. There's a reason the powers that be want them out of civilian hands.

But yeah, how many rounds do I get to carry?

I'd personally go with a hand crank cross bow or even a compound bow if I got to pick a modern weapon.

You can't really presume that the normal laws of physics work in a fantasy world and/or that magic can't easily transform or deflect both high speed flying pieces of metal and high-speed high-pressure gas release.

(For all you know, the greatest combat edge in that fantasy world is the speed and precision with which one can imagine things).

At the same time you can't presume otherwise.

"Stay flexible" is probably the best option.

If you aren't enchanting all your guns idk what to tell you

The engineer: they're standing on a boat?

I cast web on the boat surface, then get the sorcerer to fireball the web, then have the wizard shatter the boat from under them.

Alt: being chased by pirates: distant metamagic a grease spell on their main sail, then quicken spell and distant spell a firebolt. No more main sail on pirate ship. DM was both impressed and sad his pirate fight fizzled.

Weekend gunnit energy.

I think if magic can sustain your modern equipments, there would be a more efficient native way to utilize it. Like the energy to construct and supply bullets to your AK-47 maybe better used as rapid fireball directly.

This is the premise of that anime "The Gate". It's stupid, pure Japaneese military propaganda but really entertaining. To put it in perspective Dark Elves phase in and out armed with manpads vs a fire dragon!

Yes. Yes. No. No. Yes. Yes.

Killed in one shot