AR-15 vs. M1 Carbine for Home Defense

Some prefer a long gun for home defense for its power and accuracy. A hard-hitting but light-kicking rifle can give results much beyond what a handgun can do for most shooters. So what is the better choice for home defense: the ubiquitous AR-15 or the historic M1 Carbine?

We compared an Israeli Arms International M1 30 Carbine and a home-built AR-15. The test AR-15 rifle consists of an Aero upper and receiver, Brownells barrel, and Brownells bolt. We realize you can go as high as you want on the AR-15 and spend several thousand dollars, but that isn’t what we are doing in this report.

How do these rifle rounds stack up to some common handgun loads? They’re much more powerful. As noted above, the 30 Carbine Hornady FXT generates muzzle energy of 957 foot-pounds and the 223 Hornady V-Max 1019 foot-pounds. In comparison, a Double Tap 10mm 135-grain round generates 1555 fps and 725 foot-pounds of energy. A Black Hills 357 Magnum 125-grain round running 1430 fps makes 567 foot-pounds of muzzle energy, and a Black Hills 45 ACP 230-grain JHP clicking along at 850 fps makes a paltry 369 foot-pounds of muzzle energy.

Additional kit is another consideration. We found 15-round magazines for the M1 Carbine that were twice as expensive as 30-round AR Magpul PMags.

When it comes to ammunition supply, the 5.56 NATO-223 Remington is the hands-down winner as far as quantity. It’s clear that 5.56-223 ammunition is not only less expensive, it is much more widely distributed. Chances are every little shack and large outlet will have the 223, which is not so for 30 Carbine. For home defense, the 30 Carbine is more than adequate based on terminal ballistics, but the choices are limited.

And on top, our home-brew AR was optics ready, so mounting a red-dot sight was a matter of turning a couple of screws. On the M1, we would need to buy something like an Ultimak forward-handguard mount for the 30 Carbine. Also, mounting a combat light isn’t practical with the carbine. So, looking at just the set-up ease and costs, the M1 Carbine comes up short before we even begin shooting. We did not figure in the versatility of custom stocks and handguards for the AR-15 because we are on a budget. The rifle was fine as it was.

Israeli Arms International 30 Carbine

GUN TESTS GRADE: A

The M1 Carbine was the original Personal Defense Weapon. Light, reliable, accurate enough for combat use to 200 yards, and hitting harder than a handgun, the 30 Carbine performed beyond expectation. The rifle in this test proved reliable and should give any homeowner real confidence for home defense.

The Israeli Arms carbine is out of production, but there are quite a few available in the used market, like our sample. In construction, it is similar or identical to modern 30 Carbine M1 replicas and late World War II production. The rifle is well made with good fit. The controls are crisp. The trigger breaks at 6.5 pounds with a sharp reset.

Manipulation is easy. The magazine is angled into the magazine well and locked in place. The bolt is racked to load the chamber. Alternately, there is a plunger on the cocking handle that may be used to lock the bolt to the rear. The bolt may then be released to run forward and load the carbine. The bolt locks open on the last shot. The lever-type safety works well and isn’t difficult to move to Fire. It is considered an improvement over the early push-button AR-15 safety. The military felt that the push-button safety was sometimes confused with the magazine release and made the change.

The rifle has a good natural point, and the balance and handling are good. The semi pistol grip allows good hand fit, and the forward hand position is comfortable on the wood stock. It is quite easy to rack the bolt without changing the firing position. The aperture sight is placed much lower on the bore line of the rifle than the AR-15. The rear aperture is an excellent all-round combat sight. The front post is easy to pick up quickly. This sighting arrangement is one of the advantages of the 30 Carbine over the AR-15.

At home-defense ranges, the M1 may be regulated to fire to the point of aim. During close-range firing, the 30 Carbine was dead on the money with sight regulation using a 6 o’clock hold. At longer ranges, a dead-on hold could be used. Firing at 5, 7, and 10 yards, it was possible to quickly double tap or even stitch targets quickly. Fast follow-up shots are easy. An entire magazine could be emptied into the X-ring. Even relatively inexperienced shooters came up to speed quickly on this rifle. Fired offhand standing at 25 yards, the results were not much different than at 15 yards. Predators could be dusted off with this rifle in good order. There were no malfunctions with 50 rounds of American Eagle JSP loads or later with the Hornady Critical Defense loading.

The 30-caliber carbine was fired primarily with the American Eagle 30-caliber load and also the Hornady FTX load for accuracy. At 25 yards, we shot groups of 0.75 to 1.25 inches from a benchrest firing position. At 50 yards, the rifle produced several 2-inch groups.

Our Team Said: This is an accurate and reliable rifle. It would work well for home defense based on its fast handling, light weight, and excellent terminal performance. Energy and terminal ballistics outstrip the 357 Magnum in a handgun, a proven performer, so there are no worries there. In firing more than 100 cartridges, and checking our records about another 200 or more fired in previous ammunition testing with the same rifle, there were no malfunctions of any type with personal-defense loads. We did experience short cycles with one brand of ammunition that was loaded to less than full-power standard during a ballistic evaluation.

AR-15 Aero Precision Receiver/Brownells Parts Build 5.56mm/223 Remington

GUN TESTS GRADE: A (OUR PICK)

This rifle, assembled by an experienced builder, proved reliable, accurate, and capable in home defense. The good quality of the parts and the capable handling of the AR-15 rifle made it a first choice for all-round defense. The system is superior to the M1 30 Carbine, in our estimation.

This rifle came off the build-bench shooting without any type of malfunction and had been fired extensively by the owner prior to this shoot-out. The 30 Carbine had also been fired extensively, so both had plenty of break-in time. The AR-15 build proved easy to maneuver quickly. As for rapidly cocking the piece when held in the firing position, we found that all the shooter needed to do was turn the head to one side to accommodate the movement. The pistol grip allowed excellent control in tight quarters. The MOE handguard felt good in the hand, and with the proper technique, the rifle is fast to get on target. While we fired the M1 Carbine first and were impressed, a side-by-side shoot-out like this reinforces the good qualities of the AR-15. As an example, one rater fired the M1 carbine with one hand, bringing the sights to the eye and simulating an injury in the support hand or firing in very tight quarters.

The 30 Carbine was easy to heft and fire. Surprisingly, the AR-15 was almost as easy. As for accuracy with either 223 load listed in the Range Data table, the rifle was controllable and accurate. Fast groups on target were excellent to 25 yards. The 30 Carbine fared better for most due to sight regulation out to 10 yards, but outside this range, the AR-15 proved superior.

As for accuracy, the AR-15 rifle turned in several 0.7- to 1.0-inch groups at 25 yards, with groups of 0.75 to 1.5 inches at 50 yards with the TruGlo red dot mounted. The sole drawback of the rifle for home defense is the sight offset. This resulted in the bullet going 4.5 inches low at 7 yards. The 30 Carbine was easily sighted in for 7 yards using a 6 o’clock hold with the provided iron sights.

As we noted, we fired the two rifles at combat distances of 5, 10, and 15 yards. At close range, inside of 15 yards, the M1 carbine handled more quickly, our shooters said.

Our Team Said: In practical handling, the M1 Carbine came into its own. The rifle is lighter than the AR-15 and somewhat easier to store. It takes up less space and is less likely to catch on furniture or be a problem in deployment from concealment.

The safeties are each easily operated, with the lever-type safety of the M1 being fine for combat use. The AR-15 safety is a model of ergonomics and wins on that point. However, we like to keep defense rifles (and shotguns) at “home ready,” which in this case is ammo and magazine loaded in the rifle, but with the chamber empty and the safety set to Fire. Thus, to get the firearm into play, the home defender simply uses a gross motor skill and racks the action, and it’s ready.

In making the rifles ready fast, the M1 is a clear winner. The AR-15 is easily racked, true, but the M1 Carbine is much easier and may be racked and made ready even from the firing position. The bolt is very smooth with a short throw. If you have to reload, magazine changes are much faster with the AR-15, but the M1 carbine isn’t slow by any means. 

Home defense is about careful maneuvering and delivering a shot accurately. The 30 Carbine is light, fast handling, and moves like a good-quality 22-caliber rifle.

M1 30 Carbine Range Data

AR-15 Self-Build Range Data

To collect accuracy data at 50 yards, we fired five-shot groups from a bench rest. We recorded velocities with a Shooting Chrony Master Chronograph.

M1 CARBINE TESTS

Over the years, we’ve tested several M1 Carbines, and because of their timeless designs and ongoing interest by gun owners, the handy semi-auto is likely to keep going strong for generations. Here are a few past evaluations of the M1.

Inland Manufacturing M1 1945 Carbine 30 Carbine, $1079
GUN TESTS GRADE: A-

Auto-Ordnance M1 Carbine Paratrooper Model AOM150 30 Carbine, $941
GUN TESTS GRADE: A-

Auto-Ordnance AOM130 M1 Carbine 30 US Carbine, $899
GUN TESTS GRADE: B-

Fulton Armory Service Grade M1 Carbine 30 US Carbine, $1300
GUN TESTS GRADE: A

CMP-2 Inland Carbine 30 US Carbine, $495
GUN TESTS GRADE: A+

Written and photographed by Gun Tests Staff, using evaluations from Gun Tests team testers.