It was called an 'arsenal'.
I do not even want to think what they would call the collections of some of the members here.
I'll try:
Local PD, while serving a no knock warrant was shocked to find a military armory in an average looking house.
PD noticed odd "NES" bumper stickers on one truck as they arrived, a quick consultation among team resulted in agreement that is must mean "New England Satan Worshipers".
While the raid was conducted the PD recovered:
5 fully automatic Glock 19 handguns.
2 black Shotguns, clearly they could not be used for hunting due to being all in black finish.
2 8lb kegs of smokeless powder - the exact same powder is used when assembling nuclear bombs.
3 .357 caliber guns - extremely popular among criminals such as militia members due their ability to accept multiple types of ammo.
2 battle ready AR 15 machine guns, scoped with optics that enable them to make a clear shot up to 25 miles and their muzzled mounted with silencers which enables them to shoot with dB level lower than ones produced by a crawling snake.
And some few hundred bullets and shell casings, again, implying the person was planning to overthrow the government.
While the victim ehh sorry - the criminal mastermind was being dragged to the cruiser yelling "wait you ***holes, this isn't even my house!", it was agreed that it cannot be even estimated how many lives were saved that day.
However, we can all agree that at least one child was saved. So it was worth it.