It hasn't been used for anything a Ruger couldn't be used for.

Exactly.

I think it amounts to firearm racism, they hate it just because it’s black.

Anybody who says they use an AR for home defense is lying. An AR is not the ideal home defense weapon its cumbersome and the high muzzle velocity puts more people in danger. A pistol with hollow points or a shotgun arent going to kill someone across the street if you shoot an intruder inside your home.

What’s wrong with taking AR15’s away? We’re not taking anything else away? They’re destructive and unecessary.

Because in the case of foreign invasion or government oppression. Thats what the founders originally intended the 2nd amendment to mean in the first place.

Aside from defense against threats, foreign and domestic, the AR is a damn fine sporting rifle, ideal for varmint hunting, and can be a good tool for defending larger properties, or even against multiple assailants. Then there's the intimidation factor. It's a scary looking gun, and that alone has stopped criminals in their tracks.
Going beyond that, the AR cannot do anything that a thousand other guns could, and banning it because it's unnecessary sounds like the start of a snowball that would eventually make it illegal for me to pack anything with more than two rounds, as well as legislation that would require me to use the first as a warning shot.
It should not be banned, but if it is, then I invite every officer and agent that has forsaken their oaths to try and take them.

I must be imagining several people who only own an AR15, and who do so primarily for home defense then.
What works for one person for self-defense does not work for another. My mother struggles to even rack the first round of a handgun, and has difficulties firing a revolver double action, requiring her to pull the hammer back manually. She's not very fast at it.
An AR on the other hand is lightweight, easier to rack back, accurate, and she doesn't have to worry about reloading at all. The adjustable stocks (and light recoil) also make it more ideal for women who generally have a smaller frame.
The problem with take ARs away? Rifles, all types, are typically used in less than 400 murders a year. That means the most popular rifle in America, is at best, responsible for ~400 murders. In 2016, +7,000 were murdered with handguns. If we can take away the most popular rifle over 400 murders a year, why can't we take away handguns which are responsible for 1750% more murders?

Im not saying take ARs away. Just saying for standard suburban and urban home defense i think a shotgun is much better and safer for bystanders

I live more rural, have been robbed, have had to protect a friend who's ex didn't care about a restraining order, and once had to chase an unknown number of junkies off my property, so I may be slightly biased.

Second part was directed at dash, not you just so you know.
I know several people who would agree with you on that. I know people who say all you need to do is pump it once and they'll go running. And I know people who tell me all that does is leave you with one fewer round, forces you to manually load the first shot, and gives away your position. There's a lot of opinions out there on home defense.
All our shotguns have plugs in them because we dove hunt, and we don't bother to remove them. Three rounds is not enough for me to feel comfortable, and since a home-defense shotgun would be useless for hunting (unless we severely limited its capacity which it was designed to have), we'd just as soon not get one. An AR is adjustable to the situation, and could very easily use a hunting set up for home defense or a home defense set up for hunting (laser sight and scope, or simply a red dot sight for both).

Yeah again I'm not opposed to owning an AR at all. You feel safer with an AR thats relative to you. I live on a dense suburban area and dont want to accidently shoot my neoghbor too as rounds go flying through walls.

My primary home defense against biped intruders is .40. The AR is 3rd behind the 870 loaded with 00. I use my AR to protect the livestock, competition shoot and coyote hunt. I shouldn’t have to justify which tool I use for a job to somebody who thinks that tool is scarier looking than its similarly useful counterpart.

That is absolutely a consideration one has to make. Being unaware of overpenetration and firing. If you're not careful (chose the wrong ammo, are unaware) the bullet aimed at an intruder could easily kill a loved one in another room, or go into a neighbors house. (I have HEARD that .223/556 disintegrate passing through drywall. Being so small and fast, kinda like how rifles penetrate less in water than handguns, but I'm skeptical)
That's part of the reason that when I can finally afford one, I plan on getting either a 9mm or 45 carbine for home defense. For me, that would give me enough rounds where I don't have to worry about reloading, mitigates fears of overpenetration (you better believe I'm using hollow points), give me more accuracy than a handgun or shotgun (though admittedly less than a full-blown rifle), more control over the weapon since it's braced against my shoulder, hopefully not deafen me in after a single shot, and be small enough to navigate my home should I need to.

I heard that the 5.56mm NATO and the .223 "tumble" on impact with soft targets that true?

No they used to when they were working out the kinks in the rifle during the Vietnam War. 5.45mm rounds for AK-74s do though.

Ah. I prefer long rifles. They feel more natural to me anyway.

If I recall correctly, I've seen videos of them tumbling after going through a sheet of composite wood (half inch or so), and went through another sideways. I can't find the video though, that was several months ago, so memory may be a little blurred. Might have been the aluminium of a car door.

I used to have a custom AR for 3gun that had a 22” barrel. It was a tack driver. The barrel was threaded though and my state outlawed that feature.

Do you honestly think that the majority of the people who conduct mass shootings and such obey the gun laws?