Common AR Malfunctions

Posted in: Guides
Share:
Common AR Malfunctions

If you own an AR-15 and shoot more than ten rounds a year, you will run into these AR malfunctions at some point. In today’s lesson, you’ll see what they look like and how you can correct common AR-15 malfunctions. However, before we get into the malfunctions, let’s talk about a drill that can get you out of many tough spots.

 The "Tap Rack Bang" Method

You may hear this occasionally, and TRB can get you out of a failure pickle. The idea here is that most malfunctions you encounter can be fixed by forcefully bumping/tapping the bottom of your AR magazine, racking the charging handle, then pulling the trigger again.

  • Bumping your magazine makes sure that it’s fully seated into your rifle.
  • Racking the charging handle will remove bad rounds, and in the case that a round wasn’t chambered because your magazine wasn’t fully seated, this will get a pill into the chamber.
  • The last step is the apparent bang switch; Pull the trigger to see if you’ve cleared the issue; if not, you may have to take a knee and check further. This also works well for pistol malfunctions, but we’ll cover that later.

Failure to Feed

Failure to feed is probably the most common issue for new shooters and can usually be remedied by making sure your magazine is fully seated.

Many new shooters will gently press their mags into the magwell, which generally won’t seat it fully. A good rule of thumb is to not be gentle with your firearms; slam that magazine in until you hear a click and if you aren’t sure it’s fully seated, feel free to give it a nice downward tug. It’s also much easier to insert a full magazine when your bolt is locked back as you aren’t having to overcome the magazine spring pressure pushing the top round into the bottom of the bolt.

Try a new magazine if you know that your magazine is fully seated and a round still won’t feed. If that still won’t fix the issue, you may have something wrong with your bolt which can’t be fixed in the field. Now it's time for your pistol, “Remember - switching to your pistol is always faster than reloading.” Let’s see who gets that reference.

The Double-Feed

Let’s discuss a double feed next, as it’s something that you can still fix quickly in the field.

A double feed happens when two rounds pop up out of the magazine, and both try to feed themselves into the chamber. A Double feed often occurs on an open bolt reload if you slam the magazine too hard.

I know I said bump it hard before, but you won’t need to if the bolt is open. A tap and rack usually won’t fix this as both bullets are being jammed into the feed ramp. Lock your bolt back and turn your rifle clockwise until the ejection port is facing down, then give your rifle a good shake. As long as the rounds haven’t been repeatedly slammed into the feed, this will usually clear the malfunction.

If this doesn’t work, take a knee, drop your magazine, then use your booger hook to try to remove the two rounds. Another helpful tool here is a Leatherman; You can get a LOT more leverage from a metal multitool than you can with your fingers. Put your mag back in once the rounds are out and send the bolt home. If you continue to see double feeds, try a different magazine. If you find that it’s a mag issue, there are a couple of things you can check. See if the feed lips are bent if you have a metal mag. If you are using a polymer mag and find that the feed lips are losing their shape, toss it and get a new one. Magazines are a consumable that should be replaced when they wear out, though it usually takes a long time to wear out a good mag.

Don’t save bad AR mags; replace them. They are too cheap and accessible not to.

Failure to Eject/Extract

Failure to eject is the last of the main issues and can be a pain to fix in the field without the right tools. Every time I’ve seen this malfunction, it’s been because of a chamber issue. Usually, it’s just filthy or a chamber that doesn’t like steel cases.

The first thing to think about is:

  • Is there a live round in the chamber?
  • Did you get a click and a bang or just a click?

If a live round is stuck in the chamber, be extra cautious when remedying the issue. Keep the rifle pointed downrange when messing with the round if it decides to go off. If you have an empty stuck case, you are reasonably safe to go digging around; make sure your bolt is locked back, and the magazine is out.

You have two good options for clearing a stuck case:

  1. The first and best but unusually unavailable method is to run a cleaning rod down the barrel and smack the end to force the case out. I usually like to bump the muzzle with the rod into something steady like a tree or table; if something decides to go forward, your hand isn’t near it. I try to keep a nice steel screw together rod in my pack.
  2. The second option is to use a multitool to pry on the case’s rim. It’s tough to get leverage through the ejection port, but it can be done. Once the round is clear, make sure nothing is stuck in the barrel, we don’t want a squib load, then run a patch in the chamber to see if you can clean it out.

Closing

This leads me back to a couple of core principles. First, make sure your rifle is always cleaned after range trips; It can save you lots of hassle regarding malfunctions. AR Gun cleaning kits are inexpensive and are detrimental when owning a firearm. Secondly, always have a multitool on you. I carry a leather squirt everywhere and can’t tell you how often it comes in handy outside of shooting sports, but especially on the range. This should be part of man code, honestly. Share in the comments how you fix your stoppages so others can learn.

Comments
Mark Smith
Loading...
Never bang on an AR mag...this causes malfunctions. Instead, push-pull to seat the mag. Extra care in loading the mag also helps cut down feed failures.
charles
Loading...
Thanks for the info. Was very helpful. Thank you very much
Oscar Puente
Loading...
10 4 I ways carry a cleaning rod. or a small screw driver. for this reason the leathermen is too much for me. maybe I'll get me the mini. ????
Rich
Loading...
Rounds hang up on feed ramps. Its like the barrel wasn't shimmed forward far enough. It's a bought DPMS 308 upper. Bolt protrude in rear making it hard to join with lower. How do I fix it right?
Larry
Loading...
Are you firing 7.62x39 if not this may be the problem. Check ammo first. If you have the right ammo . Check all parts are right for your upper. Next check and make sure all parts are correct in lower. You might have a metal spur you need to bumpsand off. But I would bet it is an ammo problem or a mismatched parts problem!!
Thomas Sandvig
Loading...
I would say that if the bolt sticks out of the upper when it is fully closed, then you have a head space problem. If it sticks out with no round in the chamber, then you have a manufacturing problem. Could be bad extension the mating of the bolt and the carrier.
Gerald
Loading...
"detrimental when owning a firearm"? I think you mean 'instrumental'? Or 'invaluable'? But not 'detrimental'. Second, I saw someone demonstrate the value of a paint can lid lifter on getting FTE rounds. It seems it's a little easier to get into the chamber and get hooked under the rim (because it actually is a little hook at the end). And they're cheap - free if you're buying paint, usually.
Jim
Loading...
Never thought of the paint can key. Thanks for the tip, it’s small enough to always have one handy. Be safe!
William Woodier
Loading...
Good advice. I particularly like the cleaning rod advice. I always clean a new weapon as they are usually test fired by the manufacturer before shipping and will arrive dirty. When I first got my brand-new Daniel Defense DDM4 PDW, I had a couple issues with the round chambering but not firing. I was firing 300 Blackout 147g FMJ. With the first magazine in the weapon, the first round fired and ejected with no problems. The second did not fire or eject. Cycling the bolt got the round out and the primer had not been hit. Put them mag back in and chambered another round. Same issue but this time the unfired round was really stuck in the chamber. I struggled with the charging handle, but it would not budge. Finally, I used my trusty cleaning rod to force it out of the chamber. Again, the primer had not been hit. Changed mags and chambered a Sig 125g FMJ and it fired and ejected with no problems. Reloaded the 147g FMJ mag and chambered a round. It fired and ejected with no issues. I continued through the rest of the mag of 147g FMJ with no issues. Had I not had the cleaning rod, I would not have been able to dislodge the hot round .... NOT GOOD! Since then, I've fired over 200 rounds of various weights and types of bullets and the odd failures to extract experienced when it was new have not recurred. Luckily, I have not had to resort to the cleaning rod since that first time. but I always have it with me.
Don Pepin
Loading...
Clean! Clean! You can break down and clean an AR in 10 to 15 minutes. Just do it. Problem solved
Eugene Moisan
Loading...
Good tips! Thanks ????
drsgto
Loading...
Great advice. I might add a comment on double feed issue. If all the steps you discussed don't work it may be an ejector spring issue. That's what happened to me an it fixed the issue for double feed.
Jeff Hall
Loading...
New ar build won't eject spent cartridges loaded the mag with 1 cartridges fired it well won't eject spent cartridges for a follow up shot.ive changed buffers heavy to light buffer springs what's next??
Vince
Loading...
This is usually the problem with new build AR from a person never build enough or have experienced. Make sure the gas port is stake and the ejector spring is installed with tension.
Mark Juenemann
Loading...
Gas issue? Gas block mis-aligned?
Floyd Hawk
Loading...
The reference you mention is called a New York reload.
Larry causey
Loading...
I have a build ar10 that shoots 3 or 4 rounds then the bolt will catch next round in the middle and jam any suggestions to try I would appreciate it
Don
Loading...
On new built ARs ejection issues can often be the buffer spring is to tight. On my AR 10 I cut 1 1/2 coil winds off and I never had a jam since. First make sure gun is clean and lightly lubed
Ronald Smith
Loading...
Is the extractor pulling the case out of the chamber? When you pull the charging handle is the case still stuck in the bolt face? I suspect the ejector spring. Is the ejector pin hard to push in? I think the buffer has little to do with this.
James Hornak
Loading...
Had a case head separate once. It ejected the case body, spun the head around and slammed it in backwards. Craziest malfunction I have seen yet. Determined it was bad ammunition and an overgassed system. Easy clear with a cleaning rod down the muzzle.
James Edwards
Loading...
I purchased a 6.5 grendel upper from psa and love it , the accuracy out of a 20' barrel . One hundred yards grouping awesome , less than an half of an inch , shooting 123 gr horndy eld.
Zac
Loading...
Hello, I purchased a new KS-47 and took it to the range for the first time yesterday. I was running brass cased ammo (PMC bronze) and had multiple failures to eject (happened every 4th or 5th shot) and the firing pin was also not going off several times. Seems the gun has a manufacturing error. Can you please help fix or replace?
BobbiJo McLaskey
Loading...
Bought a saber lower magwell won't take a mag all way
Tom Glazowski
Loading...
I just bought the AR-V 8" 9mm 2 days ago. Took it to the range today and every other round was either a failure to feed, double feed, or failure to extract. Also, the bolt release button is so tight my thumbs are almost bleeding from trying to push it. I've never been so unsatisfied with a gun before. Definitely calling Monday to see if I can exchange it or if they have to take it from me to work on it. I hope PSA will do me right on this one.