AR Barrel Autopsy - Crooked Gas Port - Daniel Defense

[@DerWaidmann_]

Today I learned the barrel extension is a removable, threaded piece of the barrel and not a monolithic piece of the barrel

[@gradydyck519]

I thought they were press-fit lol

[@cocaine_queso4204]

Glad I’m not the only one

[@seanoneil277]

Good thing to learn. Kenny at Eagle Eye Shooting has videos showing his barrel smithing and if I remember right (but may have been some other gunsmith video) I think some have shown his cutting & threading a blank for a barrel extension, explaining the process. Worth watching here on YT, he's got some interesting gunsmithing videos, usually with end-product footage at the range.

[@onpsxmember]

@@seanoneil277 Thx, I'll check it out.

[@seanoneil277]

@@onpsxmember You're welcome. He's got some interesting videos that I've often considered a bolt gun version of Chad's work on YT. He has a fair amount of discussion of what makes a good barrel, how they're made as blanks, how they're chambered, etc. Mostly bolt gun, but he's built semi-autos also.

[@throngcleaver]

I had a crooked gas port once. It was stealing gas and selling it on the black rifle market, so I fired it. 😋 Great video!

[@gailpeterson3747]

EVERY manufacturer can and does have occasional subpar parts slip under the eye of QC before leaving the factory. That's just an outcome of products being manufactured by we fallible humans. What sets one manufacturer apart from some others is how they own up to these problems by not burdening their customers with the fixes, but covering them under warranty. This was a very good video that shows even the more premier companies can generate mistakes. Well done, Chad!! 👍

[@cotybear93]

As a guy who works in a metallurgical lab in the QC department of my company I can tell you "slips" are very rare and it is management who sends out sloppy products. They have deadlines to meet and orders to fill so they have the power to veto us if they wish.

[@JsoFLY503]

I just went to your website, by accident I hit that I was NOT 18 yrs old and it redirected me to the Disney website HAHA that’s a good one

[@actionjksn]

I have a 14.5 Daniel defense mid length barrel and it's fantastic.

[@caseyschryber1255]

Nice job supporting a company that doesn’t believe in 2a rights I guess

[@EarthAltar]

Chad, your attention to detail, and straightforward explanations are what makes your channel so great.

[@danpal2314]

My personal experience with Daniel defense DDM4V7 GREAT RIFLE . COSTUMER SERVICE IS AWESOME

[@Ninja9981000]

I love Daniel Defense stuff. They have always taken care of me no questions asked.

[@Finman78]

Holy shit!! Great video Chad, thanks for covering the dimple. I can’t believe I didn’t notice the extension was loose during headspacing. The weird part is I checked it with a 5.56 Field gauge and my BCM bolt wouldn’t close on it. I will definitely be a lot more thorough when it comes to inspecting barrels from now on! Zach

[@LiquidZ2k]

Did you use a reaction rod to tighten your barrel nut and then noticed the misalignment?

[@Finman78]

@@LiquidZ2k No, didn’t get that far, it was never installed.

[@DominicZelenak]

I recently purchased a barrel from a reputable manufacturer that had chrome lining inconsistencies at the muzzle. I called rhem and they replaced it without issue. Always check your stuff and buy from good companies. Glad to hear they are taking ownership.

[@pompanojoe1322]

I had always assumed that the index pin went through the extension and into the barrel fixing it in place like a pinned flash hider. Apparently I was wrong. Learned something new today. Thanks for posting this video.

[@LRRPFco52]

Per the TDP, it isn’t supposed to be, but some manufacturers do it. It can cause problems in chamberings with larger diameter cases or even in 5.56 if they drill too deep. It’s best to follow the TDP and apply the correct torque for the extension, and it won’t come off unless someone really doesn’t know what they’re doing and torques the receiver with the barrel mounted in it, instead of isolating the barrel.

[@jcarne1015]

I thought for many years that the locator pin was seated into the barrel threads. As a matter of fact, I’ve made a few barrels from blanks, and seated the pins. I guess I need to disassemble the upper I built recently with a Colt replacement barrel, that has the gas port a little off center, and check the extension torque. Thanks for the continuing education.

[@Diondjg1369]

Man I absolutely love watching your videos, I still watch all your older ones and get a smile when I see you have newer ones . Thank you so much for the education. I always get scared KZbin will censor you .

[@TheUnholyLordClownz]

I just got a new barrel today and im so glad you gave me some good ideas for what to check out.

[@tomwillis4826]

I really enjoy your videos. I'm saving for a class. I've been building my own ARs but watching your content I realize there is so much more to building a great rifle the right way.

[@ChristianGrest]

Great to hear DD is gonna take care of it. Sucky issue, but it happens.

[@ChristianGrest]

@@lexuspup sucks to hear that about Centurion… wouldn’t expect that kind of treatment from them.

[@angeldesigns1385]

Long story short…after three attempts, I’ll never buy anything from them again. I tried everything in the world to like them.

[@ChristianGrest]

@@angeldesigns1385 totally understand.

[@BrassAngels]

Once again another solid tidbit of knowledge. Thank you! I feel lucky to have started keeping up with your videos & getting the opportunity to learn from all the wisdom you share. Stellar! Cheers!🤘

[@MalleusSemperVictor]

Some times it isn't about letting one bad part go, that happens. The mark of a quality manufacturer is what they do when they're told they shipped a bad part.

[@seanoneil277]

Thank you Chad. Thanks also for the observation about poorly done nitriding, and the possibility of relaxing thread tension.

[@last_raven]

You're always educating us. Thank you for another great video

[@derek3154]

1:1 I hope. I never knew it just unscrewed like that😲

[@USGiorgi]

I hope everyone who makes fun of budget builds watches this video. High end companies also do make mistakes and just because you spent 2k on top shelf parts for your rifle, doesn't mean it's guaranteed to be flawless.

[@frankensteinfirearms]

Daniel defense has a Great warranty policy

[@10diamonddave]

On the base there were several high end rifles tested. DD was the only ones that failed reliability testing "two different rifles,both failed". I believe it was due to tight or match quality tolerances.

[@derek3154]

Wish I sent you my Aero upper - first shot the charging handle smacked me in the nose😅. They tried to blame the Charging handle and said it was “too strong” and I needed a milspec(it was a Radian). Then they said it was the Cerakote- but I have others Cerakote with no issues. Seemed the latch pocket was ok, I swapped all parts to my other rifles upper and had zero issues…after lots of emails they told me to send it in for inspection. 2 months later I called, they had no update on the cause but shipped me a new upper..I got screwed on my matching Cerakote and they didn’t even offer anything, didn’t give me a cause or apologize😑.

[@paullinkins8121]

Ah, the dreaded reciprocating charging handle AR upper. Ouch!

[@mikes8948]

I haven't purchased Daniel Defense products to this point, but this wouldn't negatively affect my decision if I decided to. Good on them for making it right, and I don't personally believe the defect should harm their reputation...it doesn't for me. In fact, their willingness to "make it right" enhances my opinion of DD.

[@LRRPFco52]

The direction of how it was unclocked is common for people who have torqued off the muzzle device using the receiver mounted in a vice without isolating the barrel itself.

[@kanaka118446]

They're butt buddies with the ATF. That should be enough on its own to dissuade any freedom minded gun owner from engaging in business with them

[@AbstractAproach]

It was between them and BCM, went latter cayluse of availability in my locale and looming ban

[@CvBoy95-s5m]

Managed to create this issue myself while removing a self tightening muzzle device of a nitrided barrel. Barrel extension broke loose before the muzzle device.....real fun day. Learned a lesson though, always use a barrel vise for muzzle device removal not a reciever block.

[@Jerkasaur]

I have that same barrel from Daniel defense, I had to drill a dimple for it, I noticed when installing the barrel the gas block aligned seemed a bit tricky like it was slightly canted. It seems to me now that it may be possible the port is slightly off center but nowhere near as bad as this example. The barrel was purchased through a different website but it’s that same profile DD CHF LW 14.5 mid length, I still have not test fired it

[@thomasrouh2258]

Awesome video......

[@Jeremy-kq5bs]

I had no idea the barrel extension actually came off. I thought it was a solid piece, and the name extension was just one of those weird things lol. I love this channel. I'm a huge AR fan, and have built two of them. This channel is extremely informative.

[@dlove714]

Dude that's not just educational that's invaluable

[@PistoleroSoluciones]

Excellent video. Keep up the great work.

[@huntingupland]

Wish I had seen this before I ripped into my barrel. My gas port is integrated with the front sight which was slightly canted. I did a farmer fix which worked out fairly well but not 100%. For the record, my barrel was not DD but a Norc

[@cb7677]

I first learned that barrels were 2 pieces when nitrided barrels got popular, and less detail oriented companies were nitriding both the extension and the barrel, and due to the slick surface of the nitriding (or something) the extensions were loosening from the rest of the barrel. Never bought one single nitrided barrel after hearing that, and yes, I know they can be done right. Phosphated and chrome lined all day.

[@skipper9400]

LOLOL "ooppsssss" .....DD should be red-faced about that one....BUT ! everybody screws up once inna while, or they're not doing anything......cudos to them for fixing it.........OnWard.........

[@MyCCW]

YoU WON't hAvE tHeSE ISsUeS iF YOu bUy HiGH eNd. Any mfg that mass produces anything is going to have a few that slip through the QC process. The difference tho, IMO, is the company that stands behind their products. Good on DD for standing by their products and making it right. I always hear Chad say, "This is just one of one". Even the best of the best have a one off on occasion.

[@Meight50five]

That also still doesn't necessarily "prove" "jUsT aS GoOd" really is.

[@everydayfleettech2286]

Glad DD stepped up to fix the problem.

[@Mrgunsngear]

🤙🏽

[@djinfwb]

Another great teaching session! Thank you!😊

[@Brian10962001]

I remember when nitride barrels started becoming common loads for them would be nitrided after the extension was torqued. You could usually tell if the salt residue was left in the gap. Those often would come loose within a few rounds. I believe everyone now days knows to nitride and clean before they torque the extensions.

[@Matt-dd3cw]

I have 3 DD barrels. Of every manufacturer I've used, I like their barrels the best as i find them extremely durable and much more accurate than average while remaining relatively light weight. They have the best customer service I've ever experienced.

[@jesseterrell2109]

The biggest difference in high reputation manufactures and low ones is simply quality control, just a few mins out of someone’s day to check work is all it takes.

[@caseyschryber1255]

Cope. It’s just garbage

[@TrashPanda71]

I got a new barrel (installed and sighted in only "30 rounds") but will be removing it to install in a new setup, I will definitely check the extention while it's out. Rosco K9 11.5....

[@DD-sw1dd]

I’d own a DD if I could. All mine are BCM and 1 Triarc. Much as I love DD, if I’m spending that much it’d be hard to chose between DD and Knights Armament. I typically only buy uppers and assemble a lower over time with the same fire controls configuration

[@steveninaz9576]

Thank you Sir.

[@Maine307]

Happy 4th! I love the humbleness! 1 doesnt make all, ..things happen. your mission is teaching us, how to spot the "ones" that slip by! The Manugctr seems to want to uphold his end. I apreciate that!. This again, solidifies, how much I wish you would do a Combo Creation of your Gen purpose Rifle..I think it would be wicked awesome.! Love your vids, Hasppy 4th! be safe and cheers from the woods of Maine.. !!!!

[@brodyz8327]

Always love your videos Chad. Thank you.

[@Rick-ux5ku]

exllent job and great pointers

[@pctechadvisor]

Love these videos

[@MemyselfandI001]

For some reason, I thought the barrel extension was pressed in. Thanks, Chad.

[@LiquidZ2k]

Ask the customer if he used a reaction rod to tighten the barrel nut. I've seen them shear index pins and unscrew the extension. Makes sense because he would have taken the gas block off to put the barrel nut on, torqued it down, and then notices the new misalignment

[@JCG105]

More nuts and bolts - love it. Doesn't that barrel extension pin run down into the threads and "lock" it into place?

[@seanoneil277]

More or less, from a gross movement perspective. But the tolerances between the throat groove (for the pin) and the diameter of the pin can vary, leaving some rotational movement potential. Reaction rods are the tool for the job, so that no stress is put on that pin/groove situation.

[@ericward9159]

I learned something new, thank you.

[@JayDubb3BCT]

Thanks for the knowledgeable transfer!

[@LibertyStanding]

Excellent video! :)

[@erggml1887]

If you can create a process that large manufacturers can use to significantly reduce the rate of failure or bad parts escaping QC without significantly increasing costs you will make so much money you will be crazy rich. Till then every manufacturer will have some units like this that will make it into customer hands.

[@richardbarnes4699]

I had this happen to me, so I bought a steel gas block and used a dremel to open an offset intake in the gas black and the rifle hasn't jammed since.

[@charlesgillette2925]

Pleased to see Danial Defence for making good on this. Great Video.

[@kimness7796]

Thanks! Learned a lot.

[@davekreitzer4358]

Great show Chad !!! 🤓👍😎

[@erichironsson8592]

I have q DD upper, and the rail isn't square. It veers to one side and is noticeable at the muzzle.

[@iBleedStarsAndBars]

As always, top notch work. Thank you for sharing your knowledge

[@luciusvorenus9445]

These videos are very educational. I admit to being jealous of your tool and guage inventory. 😅

[@harteverett]

Wow, that’s didn’t know all those gauges existed. I subscribed.

[@sackychin6267]

Is the rust on the threads anything of concern? Particularly for a brand new barrel?

[@SchooloftheAmericanRifle]

Pretty normal.

[@Mjdeben]

Chad, you make thermal fitting look way too easy haha! I almost went mad seating a ST 16" midlength barrell into a BCM M4 upper. Went about halfway in but was slightly misaligned. Getting it back out was a nightmare. I was using a Wagner heat gun. Is it easier to use a blowtorch for this?

[@SchooloftheAmericanRifle]

Heat gun is safer but takes longer. You are not doing anything wrong. I use tools that work faster when possible. As long as you watch the temps and don't go over 275f you'll be fine with a torch.

[@p47plane]

I had a BCM upper that, even with liberal application of a heat gun, required generous application of a 2x4 to finally seat. There comes a point when you should be breaking out the calipers and the RMA form instead of the bigger guns.

[@mattfleming86]

I'm sure there is a large safety margin there. One potential issue is that it is hard to heat something perfectly evenly. Be it a torch or heat gun heating an item up will heat the outside surface and edges/corners faster than the parts closer to the center-even with a material that moves heat as well as aluminium. Your thermometer may read 300 but spots could get much hotter. Also if a BE is tight enough to need more heat than that, you might have something out of spec.

[@bettycocker2226]

@@p47plane same, those mfers are tight.

[@Mjdeben]

​@@SchooloftheAmericanRifleThanks Chad! Just curious, what potential issues can occur if you go over 275f? I really have no idea how hot it was using the heat gun. I was on the low setting but still. Maybe baking in the oven would make more sense as weird as it sounds? Sorry for the questions. I love the idea of thermal fitment but seems like there's more potential issues than I realized.

[@flea-kh7om]

Thank you, Sir.

[@mikecollins8241]

Maybe I'm missing something, but it seems like if the extension was tightened it would have brought the gas port back into alignment.. needed to be tightened, which would have rotated the barrel/ gas port counterclockwise, just like was seen..

[@darthbrooks4933]

Thanks for the video

[@Frens03]

At least it’s so much off you can drill a new one 😅 ETA just saw the part with the loose extension 😮

[@Simply709]

I work at a gun store, We refuse to carry DD since they lied to our owner's face at shot show about their new suppressors. When people come in asking for them we often offer to build them one using higher quality parts for less money including JP Enterprises internals and a Criterion or Proof barrel depending on application.

[@kylemarvin4384]

Who hurt you?

[@Simply709]

@@kylemarvin4384 Companies that don't care about their distributors and are only worried about making as much profit as they can. CMC and DD are the top two.

[@martinswiney2192]

The only way to not make a mistake is to do nothing. Good on DD for making right on this. But it sucks to pay DD prices and have such a preventable problem.

[@stefanmolnapor910]

Nothing wrong with that barrel, it's the new trend, canted GB! All the cool kids are doing it!

[@sik59rt]

I knew barrel extensions were separate from the barrel but never knew they were threaded on.

[@Egnatius]

If even Daniel defence can mess up than there really is no such thing as perfect

[@jimgenksxxl]

Clearly!!! These people are brainwashed smh

[@peshinski]

Great content! I’m sometimes scared to watch your videos,I want to trust the manufacturer! Lol but clearly you can’t once in awhile.

[@willo7734]

Good on DD for handling the problem. Mistakes happen but it’s how a company corrects them that shows how good they are.

[@vinceburris2538]

Chad, thanks for the new video.

[@nickstarks22]

It's part of their new quick change barrel system. But the ATF would say it's an illegal SBR...

[@rickypickles2219]

damn daniel defense huh?…..pretty rare occasion right here

[@argg.x]

Thanks Chad!

[@cjanquart]

Nine seconds into the video Chad states that he's not here to bash a brand(s), only to identify and correct issues. Chad is a real gift to the AR world.

[@matthewsmith7746]

Rember guys, always use just the tip and only for a minute when dimpling your barrel

[@harteverett]

Wow , now I never considered a gas port might be drilled at an improper angle/direction other than straight down /right angle to the bore.

[@awp97128]

I had a Wilson combat barrel have this same issue come by my shop

[@lzxray6781]

Anything manufactured will have issues sometimes. That's why quality control is paramount to ensure a product that has an issue or issues is caught and the the manufacturing is stopped until it's root cause is found and remedied.

[@DB-yj3qc]

I had a 300 B.O. barrel that had that problem. The way it was found was during removing from an upper receiver. The "fix" done was crank it to crazy torque on barrel nut, 😳 I had to cut it off. The upper receiver threads galled and stripped assembled without lubrication it looked like too. First time I had ever seen a barrel extension able to be unscrewed with my fingers. A 12.5 nitrated barrel from good company. Stuff happens, it wasn't a D.D. product. BTW.

[@JOHN-hf9ow]

Like anything, things can occasionally be make wrong or out of spec. Most companies honor their warranties. Its only when there are many complaints of bad CS or products that we should avoid. But in cases like this and the Ballistic Advantage barrel, things happen. Has not swayed me away from either as both have a 98% approval rating. Nothing manmade will ever be 100% all the time.

[@denbo74]

Having a hard time visualizing how a loose barrel extension changes headspace but over lapping the upper receiver wouldn’t. What am I missing?

[@Youtubehandlesaresilly]

Headspace is bolt/barrel extension and has nothing to do with the upper receiver.

[@58Alpha]

Had no idea a barrel had a removal barrel extension...i thought they were all machined as one piece in a barrel...

[@danieldotter6077]

Holy hell that’s not even close! I love both of my DD’s but man 😂

[@waltermooreIII]

@4:20 seconds the gas port and the nut lined up at almost noon? if u had tighter it down, couldn't that have corrected thee issue?

[@kylegoldston]

I thought those index pins were drilled and pressed in After torque and headspace?

[@FullSendPrecision]

What if you torqued the extension correctly? Does it align and resolve HS issue?

[@mikhailsiderman2191]

Isn't aligning pin on barrel extension supposed to go into barrel material preventing barrel extension to rotate?

[@michaelwhite9199]

So when the company drilled the gas port the barrel extension was loose? Is that a machine controlled operation? Or would a person have handled it and maybe noticed the problem?

[@robotbuster1487]

With my 20 years of production machinist/toolmaker experience, I can give you a term paper length, speculative response to your 3 questions. As Chad pointed out, '...gas ports are drilled last...' which makes sense. If I was tasked with the job of drilling the gas port, I need a feature in place, on the barrel, to position the barrel precisely for clamping/holding it still for drilling. The best feature would be the correctly headspaced and pinned Barrel Extension,,,using the pin as a locator in my clamping jig So YES, the Barrel Extension must/better be installed correctly, and inspected, before its turned over to the guy that drills the gas port. (It may be the same guy that installs the B.E., checks headspace, and pins in the B.E. then drills the barrels gas port) Usually in a well managed factory, quality control inspectors keep an eye on blueprinted specs being adhered to by the machinists. I give a confident Yes, to question of "...would a person have handled it....? Its quite possible that a human at the factory just made an honest mistake, maybe newby filling in on that station/dept., etc. "Is that a machine controlled operation?" CNC's and PLC driven machinery can do a lot, but not everything. Some tasks are better done with manual, non CNC type of equipment. Perhaps the drilling of the gas port is somewhat automated Maybe theres an old gal that places the barrel in a clamping fixture, presses the Cycle Start button, and the drilling takes place, then she removes the barrel, and repeats the process, all day,,,, all week,, until she dies

[@davyl3059]

Why wouldn't the barrel extension be a permanently affixed piece? Being screwed on seems to make it a possible fail point as it did here.

[@perlenbacher6788]

Whats your thoughts on KAC SR15 and the URX4 handguard? Would you say it is a sturdy rail system for lasers etc?

[@RouteBGP]

Did the pin show signs of being sheared? Was there a hole in the threading where the pin was seated?

[@Kyrazlan]

I've had a stag that had a crooked gas port AND front sight gas block. It was probably off 7 degrees or so. This one is insanely off. I guess it happens to everyone.

[@shootinbruin3614]

I was under the impression that the indexing pin went through the barrel extension and into the barrel to prevent it from rotating, similar to a pin and weld muzzle device. Are there any barrel manufacturers that do this?

[@InvidiousIgnoramus]

As bad as that is, I'd think you'd notice the extension wasn't torqued properly before the gas port was drilled.