Guns are unlikely because the twins would have heard of them.
Consensus on /r/HPMOR was that Harry would have specified a type of gun and its ammo, since if he just said “guns” the twins would probably have brought muskets.
My opinion too. Guns capable of killing a troll or being highly effective against powerful wizards would break the budget AND be hard to obtain (Anti-material rifle for the former, which Harry probably cannot fire, and submachine gun for the latter), but there are other possibilities. Early in the fic Muggle rocket launchers are mentioned. I think that in the Third World, an RPG with a few rockets may go for under $1000.
Consensus on /r/HPMOR was that Harry would have specified a type of gun and its ammo, since if he just said “guns” the twins would probably have brought muskets.
Where would they even get muskets today? In a museum?
My opinion too. Guns capable of killing a troll or being highly effective against powerful wizards would break the budget AND be hard to obtain (Anti-material rifle for the former, which Harry probably cannot fire, and submachine gun for the latter), but there are other possibilities. Early in the fic Muggle rocket launchers are mentioned. I think that in the Third World, an RPG with a few rockets may go for under $1000.