AR Tech Tip - Checking M4 Ramps for overhang

[@clintcarter6233]

I cant quiet understand people who complain about SOTAR not showing part of a process. This guys makes amazing quality, informative videos with no paid advertising. They guy runs a school. If you need that level of instruction, pay the man and attend one of his classes. Keep up the amazing videos. We appreciate whatever instruction you are willing to provide.

[@joeshmo13]

It's just like you said, people want the full SOTAR class instruction without having to pay for or experience the actual class. I agree Chad does a fantastic job as is

[@thomasbaker9787]

This was a perfect video. Great information, short time, and hands weren't in the way of the small but important details 👏 freaking awesome!

[@jamesregan2181]

I was unaware of the need to remove the barrel That is definitely valuable information. Your videos are very informative. Thanks again.

[@chipsterb4946]

Makes perfect sense though. Aluminum is much softer than steel, in addition to not wanting to lose the anodized layer.

[@why6212]

Sotar: "heres an issue that arises sometimes" Me: oh yes, I see a quick solution Sotar: "Now to fix this you dont just break out the Dremel" Me: *(slowly closes dremel case)*

[@Mr_Clean]

🤣

[@oklahomahank2378]

I remember reading instructions on something once that started by saying “Put down the dremel tool and back away.”

[@mrshort2379]

I jast want to say thank you for covering that area of the barrel extension and feed ramps very educational topic and actually it made allot of since, plus is a good place to keep an eye on. great content I love your channel

[@thomasrussell7135]

I look at my rifles that I have assembled since 07 and all I can say is the God's of AR's love me. only issues have magazine induced and the nut behind the trigger. thank you for your time and information

[@thomasteac8919]

Yes that is more common than most people think. Nobody really checks that.

[@stephenalderLF15]

Because of this video I avoided having this issue. Your video helped a lot.

[@marktwo3160]

You get these kind of issues when the production schedule becomes more important then the "Quality Mission Statement".

[@joshm1660]

This is such an important channel, thank you for sharing this vital knowledge!

[@ZaluzLP]

Can you show us your way of polishing the feed ramps ?

[@aahhronismyname8068]

He did in another video

[@Nowhiscar]

Blending both at the same time also allows microscopic steel particles to become embedded into the aluminum which leads to a corrosion cell. The steel being the anode and aluminum being the cathode will cause the aluminum to be eaten in the presence of an electrolyte rich medium.

[@terrygower3424]

Amazing videos thank you so much for your time and expertise especially at no charge! Would love to see a video of how you remedy feed ramp issues on the M4 when you remove the barrel thank you so much for amazing lessons.

[@unclebob540i3]

Great one! One of the reasons you always make sure both your upper and barrel have the same ramp cuts. i.e. M4 feed ramp barrel with M4 ramp uppers. I have seen similar issue with M4 ramped upper and non M4 ramped barrel extension.

[@larrythorn4715]

M4 ramped uppers must have M4 ramped barrels, but it's worth noting that rifle ramped uppers are usually just fine with a "mismatched" M4 ramped barrel. Perhaps not the ideal, but I have at least two like that and both work just fine.

[@DJG37S]

This just shows it doesn't matter if you have a 2K rifle or $200 rifle, the manufacturer don't QC everything. My BCM upper had this issue while my DD MK18 hasn't. I wish Chad would start up his own AR company. I would buy parts from him because I'm sure he would QC everything.

[@b52doc57]

DJG37S That company would be Hodge Defense and the price reflects that.

[@Rudyelf1]

B52doc I did see pics of a Hodge BCG with weak staking. But that was just one.

[@b52doc57]

TCarstens1 So the claim to fame for Hodge Defense is that the rifles are meticulously built by one guy who is regarded as an industry expert. The finish, QC and details are supposed to be second to none because the rifles are made in limited small runs. I don’t own one and wouldn’t purchase one

[@b52doc57]

Rudyelf1 I believe it. Every company has QC issues. Some more than others and they tend to be more frequent when they produce a ton of rifles.

[@b52doc57]

TCarstens1 Gotcha 👍🏼

[@AxisFlier]

Thank you for the info. Never had this issue but it is something to watch for in the future.

[@recondo886]

great information!! one day I hope to take your class just for the knowledge.

[@Quality_Guru]

In the high tech world whenever we had an issue with a not fit for use part we would require the supplier to provide a certificate of compliance for any future shipments. For suspect suppliers we would conduct an inspection on every piece and charge the supplier for auditing their lot because they were not on the approved supplier list. I would think that a qualified gunsmith at a respectable local gun store would attend your training. They in turn would be well qualified to be able to provide a certificate of compliance with each and every AR-15 that they sell. I believe that they would be inundated with customers that would appreciate the value added service they provide and reward them with dollars.

[@jefferyboring4410]

Ya everyone loves more expensive guns.

[@johnqpublic2718]

I have this EXACT problem with my m&p15. I'm glad you mentioned the bit about not dremeling the aluminum upper, removing the anodizing; I was about to go get the dremel. I dont necessarily need help with the removing barrel part, but did you make a follow-up video about what to do with the feed ramps?

[@actionjksn]

Just checked my Grendel build and it's perfect. I used an expensive upper receiver and barrel, I think that helps. Both my uppers are VLTOR which is very nicely machined.

[@GetMeThere1]

I had that on a 6.5 Grendel -- and at first didn't see or understand it. Using Prvi Partisan FMJ ammo -- nearly every round would catch the point of the bullet and stop feeding. It's a MAJOR flaw -- especially when the rifle can seem to function fine, but then ammo is changed and things so bad!

[@JB_Royal_Ambassador]

Great informational videos. Wish I knew about this back in the day buying and building ARs.

[@MAGAWillSaveTheWorld]

My Aero upper has a slightly twisted barrel, which has the feed ramps are just like yours in the vid, so thanks for the vid. Mine don't have a feed issue but it's digging deep scratches in the projectile, I'm afraid it will damage the rifling.

[@JG54206]

I wouldn’t have thought that would be present on a Daniel Defense.

[@michaelbirdsong196]

i love your channel learned so much just built my first Ar platform and will continue to do so . great channel

[@jacquelynberry2789]

Love your videos man, can you point me to some info about different magazine profiles and how different mags feed the tip of the projectile into the chamber?

[@johnpawly1849]

Thank you I just found your channel and I’ve learned so much

[@roypoulos1378]

Excellent video. Very informative. Thank you.

[@z50com]

A $1800 rifle that isn't perfect? I would be pissed if I spent that kind of money and got that. . . . .

[@peterpham5245]

Thanks for the info, I'm gonna to get wood chopstick to do the work.

[@winniegrandpa1363]

Excellent information and quality of video!

[@MAGAWillSaveTheWorld]

I have overhang and it's digging into the bullets, so thanks for the info.

[@CaptainCiph3r]

I hate having to fix this. That steel is hard and takes forever to fix the overhang without going too far.

[@johngroberts952]

Every morsel of knowledge helps. Thank.

[@RwP223]

My PSA receiver has the opposite, the receiver protrudes over the barrel ramps. I assume doesn't 'require' gunsmithing.

[@jokov9903]

Thing in the nut shell is, he said it might not matter, it might go on forever like that with no issues.

[@SchooloftheAmericanRifle]

I dont guess or take shortcuts

[@jokov9903]

@@SchooloftheAmericanRifle I was just taking your word for it.

[@buddyx471]

1000.00 rifle WOW THATS WHY I BUILD MY OWN LOVE THIS CHANNEL!!!!!

[@truthfulconch7773]

Upper...the lowers generally tack on 6 to 7 hundred more, or more. Complete DD rifles are about 1600 cheapest. That's why I build my own as well. My Franken rifle is just as well put together as any other out there.

[@mastrsk8]

Thank you for the info! Don’t tell my wife I don’t know everything!

[@halfluckhalffate571]

Awesome videos! Thanks.

[@twrol]

Nice. That’s an expensive gun to have a qc issue like that.

[@unclebob540i3]

Not the first DD I've seen with QC issues.

[@immersivecrusader1]

What if it’s the upper receiver partially covering the feed ramps of the barrel extension? I’ve never had feeding issues or anything but your videos have made me a bit obsessive with checking things on my rifles lol

[@Krazyirish13]

What do you do if the upper receiver has a shelf in front of the feed ramp on the barrel

[@DsrtObvr]

What if ramps of the barrel are under hanged?

[@escott3829]

Thanks For The Weapon Wisdom.

[@MatterMadeMoot]

I was pleasantly surprised, my Aero receiver and Ballistic Advantage barrel mated almost perfectly (even though my neanderthal ass put them together). Never knew to check this, thanks a ton.

[@cheryljason9617]

Nice job Daniel Defense

[@MR619Can]

good video!

[@theloyalnine9765]

Please so the rest of the process!!!

[@shadyp-zv3uf]

Good 2 know to maybe mark with sharpie on the barrel extension and only polish the barrel extension to the upper and not the other way around

[@mannycali334]

Question is gunsmith industry worth it like can you survive from gunsmith income?

[@frostyan]

Hello , I have a M16 retro upper and my BCG and Magpul vise block does not go in barrel ramp. Would like to send you a video. the crazy part is that i have an old colt AR and that BCG fits with no issue.

[@dragonusmc0311]

Good one the down votes must be from Lazy Armorers :)

[@twrol]

DragonU.S.M.C/0311 DD fanboys.

[@JeremyLurie]

Very butthurt dudes that have gotten absolutely dunked on

[@Sluggaboy27]

Or from Daniel Defense fan boys lol expensive rifle to not have the small things QC'd properly.

[@typhoonjaybay7894]

Ever seen the ramp feeds for a gilboa? 😮‍💨

[@claponclapoff6]

I haven't fired a shot through my new AR. The first thing I did was polish the barrel. the second thing I'm going to do is Polish the feed ramps . The third thing I'm going to do is lap the receiver. Then the gun will be fit to fire.

[@nikolasbbq]

for $1k or whatever those uppers cost - F that.

[@rickypickles2219]

when you go to swap barrels out again wont you have the same issue?

[@APBT-Bandog]

Why not put a very this shim between the barrel and the upper receiver under the barrel nut to move the extension forward slightly?

[@tylerhall6455]

prob would change ur headspace doing that

[@APBT-Bandog]

@@tylerhall6455 That would not change headspace, as headspace is dependent upon the bolt/barrel extension interface, not the upper-receiver.

[@THATMOFODIRT]

Good stuff

[@versoarmamentcompany]

Would love to see a video of you removing the barrel

[@Brandon-ob8ul]

Do you feel DD are worth there price? I personally feel they are overpriced for what they are.

[@archdukeofsynth]

M4-style feed ramps always seem like more trouble than they're worth.

[@stevensteven5479]

I have a stripped upper with no feed ramps at all. Can I use it with a barrel with m4 feed ramps?

[@cw5865]

What if it goes the other way and the receiver ramps are a tick above the barrel ramps (should be a no factor). I ask because after 40 to 50 rounds (any lube on the ramp is gone) open tip rounds seem to stop right at the receiver ramp, I am thinking due to angle and would like to smooth that area. It is a 6.5 Grendel of course and all the mag issues are visible from E-lander to Dura-mag to others which really are rebranded E-Landers, but this occurs just after the round leaves the mag and just stops at the receiver ramp... Thanks, as I too was breaking out the Dremel, but something told me you better you-tube someone like the School of the American Rifle first. Is there a polishing technique?

[@Shadowdancer777]

Hmm. Going to check mine right now. Lol. I have a lwrc.

[@dannyarcher3534]

Would this be covered by DD’s warranty?

[@Shift1dwn5up]

More than likely

[@airsofthuin]

as soon as seen this looked at my 8” 300blk n it was over hang but not enough for any malfunction put 50 rounds through it

[@brokenman-f2t]

What if it's the opposite, and instead of sticking out just a touch proud it's in a little too deep?

[@akforge]

That is a shame a QC issue like that would leave Daniel Defense unchecked considering their price tag.

[@shawnnystrom6297]

Would this cause the rounds to have chunks of brass shaved off as it feeds ? I just recently got a dd mk18 and it is having trouble feeding more than 3 or 4 rounds in a row and i am seeing lots of brass shaving in my chamber after shooting very little!

[@Bombero43able]

When should be done and how often?

[@Theloss52]

What happens if your barrel is recessed in the receiver? What is the tolerance?

[@peeeoii2738]

My feed ramps aren’t perfectly centered is this bad ? No over hang

[@robertjackson1407]

Thank you 😊

[@clloydhi]

Daniel Defense gun?

[@jeffberk4630]

my problem is exactly reversed - where the anodized surface is the one that overhangs. any advice?

[@its_bob_from_accounting801]

so is it safe to assume that if one does apply a file to the feed ramp while attached to the upper ,that upper should be considered for the scrap pile ?

[@TheNLHAZE]

What is the main reason for this thanks ??

[@rickypickles2219]

i have an lmt upper that is chewing up ammo a bit more than my other rifles. is this an issue?

[@T_D_B_]

Is removing the anodizing really that big of a deal? If you sand away all ano to bare aluminum, it will inevitably oxidize. Aluminum oxide is extremely hard.

[@MrS22222]

One issue would be the bare aluminium and steel are dissimilar metals, so rust would form. It will be oiled so I doubt it is much of an issue.

[@newdeathscope]

@@MrS22222 Aluminum doesn't rust, and anodizing is just a thicker version of the oxidation that normally occurs on aluminum.

[@steveo5763]

So it appeared the barrel is inset too far. Would you work the ramps or shim the barrel to pull it out further? Or better yet, what is the correct way?

[@gb12rulez]

I’m having the opposite issue and the barrel is all the way back

[@bigmiken5472]

What if the overhang is the other way?? the receiver ramps over hang the barrel ramps??

[@HunterCO1]

I never remove the barrel never had a problem.

[@armedfarm3429]

Me either, easy to get from underneath through magazine slot. Small grind wheel, keep back of wheel from aluminum.

[@Shankdaddy16]

What about the opposite situation where the barrel extension feed ramps are a little bit past the receiver cuts? My BCM upper is like this but I haven't had an issue yet (very few rounds though). I would assume this is not an issue since one cut leads into the other cut and there is no ledge in the way of the bullets path.

[@brianv.1300]

Good question, hoping somebody knows.

[@TruthBombz]

For the price of a DD, wouldn't you expect better?

[@shawnm4503]

How common is this?

[@Lure-Benson]

I started with AR rifles in 1989 and now have put many together so I am dumb founded at reading all the problems in the comments about AR rifles because never have I seen these problems. I buy only known quality brands when assembling a AR . I have a feeling all of these problems are coming from off the wall odd ball brands & AR parts. I have pretty well settled on AR Stoner and Aero precision for my AR build parts

[@SchooloftheAmericanRifle]

I see consistent problems with higher tier AR parts and manufacturers. Does not mean the parts are bad, it means not everything is drop-in or completely compatible.

[@mr.excitement689]

Damn that’s a lot of grease lol

[@jeffjefferson2676]

Feed ramps, and feed ramp design are an issue. I was designing feed ramps for an AR10 barrel extension, and i was not sure how it should look dimension wise. Probably its best to keep the angles close to the colt drawings and make sure the ramps meet up with the upper receiver. Well only time will tell once the thing is there, and we will see how it feeds.

[@JackManiacky]

Speaking of anodizing, I have a rock river circa 2010 with m16 feed ramps that they "polished" some extensions into the reciever. Smh

[@kalliste23]

Dab of JB Weld and it'll be good to go.

[@strictlyoutdoorschannel8716]

On a Gucci DDV7? No way! 😂

[@buckets_of_lead]

I haven't put together my new rifle yet but what do you do when the barrel extension is nickel boron coated? Still grind the barrel?

[@mauriziorivera6840]

Use thin barrel shim to slightly move the barrel forward.

[@garydowd7313]

I wonder how a yuppie rifle is considered the gold standard.

[@tv92taylor]

How serious of an issue is this? Most every rifle I have ever looked at closely has some overhang.

[@CaptainCiph3r]

Some is fine, a lot is baaaad.

[@SchooloftheAmericanRifle]

Any bit of overhang is not acceptable to me. I have observed too many issues with feeding and consistency to let it pass. What you allow on your own builds is your call.

[@davidgearardo1788]

That which you tolerate you will receive in abundance.

[@edwardbyrd7667]

Dude, I love your videos, but you give me so much to worry about. It’s getting hard to pull the trigger, sorry about that, on any new barreled uppers within my budget

[@pjbiggleswerth8903]

I have baaaaad overhang on my radical 308. They don't care lol

[@charliecharlie58]

as always I learn something new.

[@GasGunsGod]

Nah im just gonna dremmel

[@michaelmendez5658]

Could I pay you to check my AR build?

[@BeneaththeStreets556]

I thought Daniel Defense was soooo much better than that😢