AR-15 for Home Defense

Should You Use an AR-15 for Home Defense? We Tell You the Truth

Have you ever wondered if you should use an AR-15 for home defense? I bet you’ve heard someone say that it’s overkill or will go through all your walls and kill the neighbors.

The AR-15 is great for home defense. It can carry enough ammo to engage multiple intruders, is easy to use, and is inexpensive enough that almost anyone can afford one. 

Keep reading to see why the AR-15 makes a great home defense weapon.

The AR-15 for Home Defense

You can definitely use an AR-15 for home defense. Some people complain about the length of the AR-15 when you’re moving through a home, they also say that it can’t be used with just one hand, which is true.

The truth is that you shouldn’t be trying to clear your house if you think there’s an intruder. This makes the length a non-issue, not that it really is one since you can collapse the buttstock all the way down which makes it relatively short as it is.

Let’s look at some of the reasons that an AR-15 makes sense for home defense.

Why it Makes Sense to Use an AR-15 for Home Defense

  1. The 5.56 mm or .223 round actually penetrates about as much or less than common pistol calibers.
  2. The AR-15 is easier to shoot under stress than a pistol. With a pistol, the shooter has less control over the weapon. With a rifle, the shooter has more control over the weapon.
  3. Similar to number 2, an AR-15 is easier to be accurate with.
  4. The big one for me is the fact that an AR-15 is easier to shoot faster than a pistol. This is especially true up close!
  5. Another big reason to go for an AR-15 over a pistol is the higher magazine capacity.
  6. An AR-15 will defeat soft body armor while more pistol rounds will not. There are plenty of “novelty” rounds out there that move fast enough to defeat soft armor but they don’t do as much damage to the person under the armor as a 5.56 or .223 round does.

Overall the AR-15 will penetrate walls the same or less than a pistol, defeat body armor when a pistol will not, is easier to shoot, faster to shoot, and has more ammo.

It’s honestly hard to beat an AR-15 for home defense.

If you prefer the AK platform then an AK-74 is another good choice. The ballistics are very close to the AR-15 (by design) so everything above still applies.

Just make sure you don’t use any of the .30 caliber rifles out there. Any .308 or 7.62mm (AK-47) is really going to over-penetrate! Only use these if they’re your only option or you live out in the middle of nowhere.

Even then you’ll need to be especially sure that there is nothing behind your target that you may accidentally hit.

The Downsides of Using a Home Defense AR 15

They are VERY loud indoors. In the few situations when I’ve had to fire an M-4 indoors, they left my head ringing afterward.

That’s really about it…I’ll take an AR-15 over a shotgun or pistol for home defense any day.

What Accessories do You Need?

Accessories on AR-15s can be a debate that goes on and on and that isn’t the focus of this article. I’m just going to cover what I consider to be the minimum that you need for a home defense rifle.

First, a good light is a must. I really like the Surefire M300C. It has a simple on/off switch that you can actuate with your thumb and is really bright.

It’s also a Surefire and I’ve had nothing but good luck with them over the past 17 years or so.

The next thing is iron sights. I normally have a fixed front sight and a pop up rear sight. The rear sight can be anything that attaches firmly and holds zero.

I like built-to-last gear so I normally choose something along the lines of a Troy Industries Folding Battle Sight.

That’s it. All you NEED to have is iron sights and a light. Anything else is extra.

Other Accessories

I like to put a red dot on all of my rifles that are going to be used for up-close work. I’ve always used Aimpoints and I still use them. For overall longevity and durability, the Aimpoint H-1 is my current favorite. Unless you need to use night vision, you can’t go wrong with it.

I’ve heard the Trijicon MRO is a great optic but I haven’t been able to get my hands on one yet to say if they are. If they’re even half as good as an ACOG then I bet they’re great.

You can get a decent red dot for around $200 but my experience with them has been hit or miss. I’ve used some that were great and I’ve had some that would turn off after two rounds. Just be sure that whatever you choose functions well before you trust it with your life.

You could add a sling on your rifle as well but I don’t for home defense rifles.


The last part of the equation is ammo. Honestly, you can use anything and you’ll be effective. It doesn’t have to be expensive to do what it needs to do, especially at close range.

With that being said, I like 77-grain bullets because they’re more effective against soft targets than other types of 5.56 rounds. If you’re interested in finding similar rounds, you can just google 77-grain open tip match or 77 gr OTM. At close range you don’t need the accuracy that they’re known for, you’re looking for their ballistics against soft targets.

Does an AR-15 Have Recoil?

AR-15s have recoil but it’s actually very minor. Most people will feel less recoil when using an AR-15 than they will with a pistol and definitely less recoil that when you’re firing a shotgun.

The weight of the rifle helps to counter the recoil of the 5.56/.223 round that the AR-15 fires and holding it with two hands and having your should there to help brace it reduces the recoil that you feel even more. Once you’re used to the recoil of the AR-15, it’s really easy to get quick follow up shots that could be needed if your home was broken into by multiple people.


There are a lot of people out there that don’t believe an AR-15 should be used as a home defense weapon. They’re worried about overpenetration and who knows what else. If you’re still worried about these things I’d urge you to seek out the FBI tests that prove that an AR-15 is perfectly suited as a home defense rifle.