You forgot to add the James Bond theme music when we're looking through the finished barrel.

That pistol is SO DEFINITELY going to be included on the next Canadian assault weapons ban!!

@garygrant91

2 ай бұрын

Of course it will be. After all it is FULLY SINGLE SHOT!!!!

@tbthedozer

2 ай бұрын

🤣🤣🤣🤣🤣🤣🤣🤣

@r4_Texcluding

2 ай бұрын

It uses parts from AR-15 - too black and dangerous for Canadians to own.

@DeadPollo

2 ай бұрын

A good reason to name it something offensive like "Canadian butthole tickler"

@atvheads

2 ай бұрын

But it has to have a name then. What about whiteness? :))

"I don't know if you care about the machine" No no, the machine is by far the coolest part

@spacedmanspiff1543

2 ай бұрын

Agreed!

@justsomeplantcells-

17 күн бұрын

The boring part

This is the stuff we firearms nerds love

@liamwinter4512

2 ай бұрын

This is the way

@kittty2005

2 ай бұрын

We need a model with grenade launch ability.

@alexandertoshich765

2 ай бұрын

Loved all the info.

@bill4639

2 ай бұрын

I am pleased and suprised Mr. Serbu mentioned “strain hardening”. Few people understand the complexities of hardening different types of steels, which is very important when dealing with high pressure. The part he did not cover, and I would really like to know, is whether he does his heat treatment before or after the rifling process.

I love how you explain everything so even a non Smith can understand it as long as they have experience working with these sorts of tools, I'm shocked I even get notifications because we all know they likes to bury this type of stuff sadly.

When height over bore is a status symbol, Mark Serbu sits high above us peasants. The optic has got to be like... 5 inches above the bore.😂

I can only hope one day to know even half as much about firearms as Mark Serbu!!! Thank you for the videos!

@kittty2005

2 ай бұрын

Then you'll only know half as much as he, what good is that.

@columbiawarmachine9795

2 ай бұрын

@@kittty2005that would be 2 times more than I know now

I always wondered how they do rifling!

@brolohalflemming7042

2 ай бұрын

Same. It's always struck me as one of the dark arts of gunsmithing, ie how to make the highest precision barrels for match rifles

@zopEnglandzip

2 ай бұрын

​@@brolohalflemming7042I think the real witchcraft was blacksmiths getting close to this hundreds of years ago with hammers and coals.

@bill4639

2 ай бұрын

There are other ways, but this is most common. Check out how Steyr Mannlicher does their barrels.

That AK 50 video that Brandon made leaves a lot to answer but … He is the founder of that weapon and he deserves all the respect

Dude the machine's pretty cool too

Mark I bet if you made some of those rn pistols in big bore Calibers like 500 bushwhacker ect as well as popular hunting/ sporting calibers they would sell like hotcakes, I bet even Kentucky Ballistics and Edwin would love them

@anchopanchorancho

2 ай бұрын

KBs' neck is just burning as you type this.

love you as always Mr Serbu!!

@kittty2005

2 ай бұрын

I love him before you.

Don't be stingy on the cutting oil; we always used a steady flow of cutting oil while broaching in a bigger press than your using for barrels. Klien Tool made many of our custom broaches and end mills. I'm sure they could make button dies and chamber reamers too and if you send them a drawing they can quote you a price.

Best part is chambering with the drill and it still shoots great

Approx around the 4:40 mark the cylinder made a few "jumpy" movements ...this can usually denote that there may be some amount of air in the system and only needs to be bled out. Also at the same time fully retract the cylinder rod and then check oil levels in the reservoir to be sure it is sufficient. Many times all one has to do to bleed out air is to cycle the system ... fully extend and retract cylinder rod numerous times and this action will also heat up the oil a little and also "hopefully" help dislodge any rouge air pockets and send it back to tank/reservoir (generally there is a breather cap on the oil reservoir to allow any pressure to escape). Operation will become smooth again. * being that it happened at near end of stroke/extension then i would definitely check oil level in reservoir first and top it up BUT remember only top up if cylinder is full retracted, else a major mess may/will occur. Of course i am a fan of all that you do and is why i bothered to type al this sht out, Sir \\\o7. Keep givin er.

Been looking forward to the next installment of this.

if people are doing other " better things to do" than watching your videos, then they are wasting their time :) thank you for taking the time to produce your videos....

I love the RN-Mini and your way of going about things

Completely impractical. I want one. Thanks for another thought provoking and information pact video. 👍👍🤔👍😁

Mark is that cool nutty uncle we all need

finally, have bean waiting for this vid for ages, did the ECM rifling wih 3d printed tools and it works really well.

@samellowery

2 ай бұрын

I've seen vids on this did you ream and rifle or just rifle any other info like how the rifling looked

@surplusdriller1

2 ай бұрын

@@samellowery search FGC9 and all your questions will be answerd

Who noticed he didn’t say FIRE IN THE HOLE !

@rickoshea8138

2 ай бұрын

Because he is alone?

@bunnykiller

2 ай бұрын

no need to warn people who arent there ;)

Thank you for the vid Mr. Serbu. Always informative and a pleasure. Peaceful Skies.

Really enjoy watching you create future toys in your workshop.

How many barrels can you do with one rifling button

@mister5357

2 ай бұрын

🤔

@rustyshakleford5230

2 ай бұрын

Depends on the barrel material and the button. I had 17 cal buttons that are only good for 2 barrels. Maybe 4 if they are stainless. I have a 45 cal button that's done over a dozen rifle barrels and still produces nice sharp grooves still. It also depends on how much work you want the button to do. If you want a 30 cal button to cut 85 tenths out of a .2995" bore it will wear down faster than if you start with a . 3005" and only have it move 75. Single point rifling is far superior to button and hammer forged. Look up the colonial Williamsburg gunsmith video from the 70s. They single pointed their rifles back in the 1800s and we pretty much still do it the same way today just with a lot less wood and paper shims.

@rustyshakleford5230

2 ай бұрын

I had a 12 cal button not even finish 1 single 20" barrel. Barrel turned into a tiny little shotgun barrel after about a foot of rifling. I 💬 no that was an issue with heat treating though. That tiny button was so hot when it popped out that it blued itself. Just through friction.

@nobeltnium

2 ай бұрын

@@rustyshakleford5230 if push through slowly enough the button won't get super hot and anneal it self, i believe

@killpidone

2 ай бұрын

​@@rustyshakleford5230 Sounds like a skill issue

Hell yeah! I’ve been waiting for this for months

Richard will be proud of you Mark. 😂

Thanks for the info Mark ! You are the only guy on the net to help us out ! Thank you sir

this is an old school type channel. i love it.

Every man needs to watch this video. It's fucking inspiring. Thank you for this video, Mark.

I love the mess on your shop, it reminds me of my office 😇

Really appreciate your knowledge and skills to explain how things work. Keep up your great videos.

This was soooooo cool! I only wish I knew where to score a used machine like you showed.

Having better things to do with my time does not stop me from watching your videos, Mark!

Awesome 😎

Fascinating! Thanks for sharing that!

Whodathunk if you mount the sight 4 inches above the barrel it shoots 4 inches low at 10 feet? LOL great video as always.

15:14 the height-over-bore-inator! You'll be the talk of the tri-state area with this one! 😂

Very cool Mark and enjoyable video thank you for sharing this with us six stars brother

I’ve never seen how rifling is done. Thank you for the info. Now I have a reason to buy new tools. If I rifle my sewer out pipes will increase my flushing power?

@danielturner4152

2 ай бұрын

Only if you account for the coriolus effect and orient the spiral for northern and southern hemispheres relative to your location

Love to plug our local folks here in Iowa; Brownells sell chamber reamers among other things. I think I may have gotten my go and no go chamber depth gauges from them years ago too. Those "grease gun" barrels you rifled look like they belong in a version of that single shot pistol you designed for gun buy backs. My money says an updated set of plans for a GB-9 packaged with a barrel will be a great seller. Side note: I just seen a video on a 3d printed GB-22 that's a closed bolt version.

Cool video i always learn something new from you about gun smithing.

Great video!

Love it, thank you Mark

Awesome, as usual.

Mark, you are a great dude! This is a major help to all 2A absolutists. I had no idea I could just order the tools necessary to make my own barrels. I now hope to be a future "Mark Serbu" myself!😂 Tho there could never be another really. This was an awesome video bro.

@Tunkkis

2 ай бұрын

Hell, you can do it even easier and cheaper by ECMing it. 3D printer, water pump, salt water and electricity.

I was hoping the AK-50 was going to be select fire, but I'm a dreamer.

Sbr? That stock is so wobbly I'd let it drive me home....

Great video! I’ve rifled some .32 cal blanks in the shop using a hydraulic press. Biggest issue I had was ensuring the button could turn freely. I didn’t have a thrust bearing that would take the required force. Really nice dedicated press there!

Thanks for the update video!

I've been wondering how rifling is done. Such an interesting process! Thanks!

Dat high over bore tho. Woo lad

I recall seeing this process done pure hydraulic with the button being the piston. Crazy high hydraulic pressure for sure.

@13andsim

2 ай бұрын

This is pure / standard hydraulics only consisting of an oil reservoir with an electric motor coupled to a hydraulic pump that is submerged within oil inside reservoir and either 1 pressure line to cylinder (single acting cylinder with spring return) or if 2 lines going to cylinder, then it would be a double acting cylinder meaning powered extension AND powered retraction. Some call it an "Electric over Hydraulic" system.

@markserbu

2 ай бұрын

@keithjurena9319 Are you sure about that? The area of the base of the rifling button is basically .100" square inches, and we saw that the force required is 5,024 pounds. P=F/A so Pressure=5,024/.1 or 50,240 psi. That's a HUGE amount of pressure, and requires a very specialized hydraulic power unit. Hell, you might as well try firing the button down the barrel with gunpowder (which I intend to try!).

That was pretty cool.

Take a shot everytime mark says “hard”

@markserbu

2 ай бұрын

So basically one shot.

That is pretty cool how small of a machine it took to make that barrel .

Dude without the stock, that is a nice candidate for a Sci Fi movie prop blaster definitely

Always something interesting.

Very cool.

Yes, but do you dare put a suppressor on it :) Nice job, Mark!

Now i know how to build a rifling machine

Good stuff.

I wish I could take a day and just learn from you, Mark.

I would like to see you do a barrel rifling in the whitworth rifle style ( the hex rifling).

So, Slightly off topic question. Have been recently watching one of Gun Jesus's older uploads on the Whitworth Rifle. And am left wondering how did they produce the barrel with a (Hexagonal?) bore along with a consistent twist rate?

@StepSherpa

2 ай бұрын

You could single point it, though honestly this seems like a far easier way to get a good result due to indexing and getting the flats to properly line up etc. Etc.

Now that pistol with 9mm barrel and a suppressor could be very quiet 😉

Hey mark, have you tried ECM or EDM, or whatever it is 3d printed mandril rifling yet? Needs a 12v power supply, really crappy 12v pump, 2 leads , 3d printed mandril, a few other 3d printed things, 5 really small guage copper wires, and piece of drilled steel that the mandril will fit in (8.82mm i think). It will rifle the 8.82mm hole into a barrel with the chamber, throat, and rifling cut in about 10 minutes at 4 amps. Pretty neat.

hello gun zeus, i am humbly asking if you could post more videos on your stamped receiver rifle?

I made barrel same way years ago. rifling button was made of steel dowel pin.

good stuff

The button looks good... lols check to make sure it's still in spec after 500 odd 36 inch blanks .. 50/50 Lanolin and Castor oil with 5% Dow Corning Molybdenum Disulphide by weight...

kurt Cobain pov:

Mark if the anti fun nazis see this you are going to be in sooo much trouble. Too hell with them, keep doing what you are doing.

Check out fgc-9 mkii and the ecm barrel process.

Are you sure there’s enough rake and relief on the rifling buttons, or is burnishing and expanding the barrel part of the intended process? Are the minor diameter flats of the lands burnished by the button or is that a reamed finish? I think your rifling press either has some air in the lines or some pretty elastic lines to flex/swell so much at only 400 psi causing the herky jerky motion of the ram. The motor could contribute by slowing and speeding up. The cycle time for that short barrel was pretty quick you could try decreasing the displacement of the pump if it’s adjustable to take some variability out of the motor rpm by decreasing the amount of work it has to do. I’m guessing it’s a close coupled submerged pump by looking at the set there so belt and pulley swap is probably out.. I really liked the video though, makes me wish I had the equipment, metallurgy knowledge, permits and licensing, shop… to do some similar things. 😃 I just really like help things run like they make their job look kind of effortless.

That is your opinion on widely popular requirement for blank OD to be at least equal to 3x caliber to be button-rifled?

I want to know how gain twist rifling is made

@stiles3711

2 ай бұрын

Not with a button, usually it's single point cut on a rifling machine made with a rotary axis and a linear axis

In before YT nans the video. The rifling driver runs much quicker than I expected.

Awesome test bed and very scaleable to make an understatement. Color me crazy, but that hammer drop force might be a bit more than a 9mm primer requires and enough to spoil your aim.

F yeah Serbu

serbu is quite the rinky dink operation

Awesome thanks

So that thing does a better job than a sledge hammer?

I love and understand what you do and why, for the love of shooting. Imagine your group size if you were squared away and had a non disneyland fairy stock on that! Probably only one .355" hole?

@1:15 ...aaand we're demonetized and on a list! 😆

This is one that you could've made as a collaboration between you, Taofledermaus (if he wasn't trapped in Californistan) and the Hydraulic Press Channel.

I am surprised the push rod does not bend as it is unsupported for the initial few inches, what is the material you have used for the rod?

Is it important to push the rifling button in a steady pace or can you push it in steps with, for example a hydraulic garage jack?

hello! Could you make a video explaining the complete process of making the gun barrel? and show the order in which it should be done? example: drilling, reaming, grooving, tempering etc. since the order is not clear to me. Since in a video you first temper and then pass the button and I am not sure if that is the case or first you pass the button and then it is tempered. It's just that my English is a little bad and I can't understand when they speak it. I can only read and write it. and the KZread subtitles translate poorly. thank you!!

Is there a center for alignment of the pusher and the button?

Is that homedepot pipe? Or did you make it? for the PB

Rifling

Sweet.

The rifling twist pitch eg: 1:10 is made by the bottom just being pushed or the machine has to do the twist to give the desired twist pitch

@markserbu

2 ай бұрын

@Ju379an No, the button turns on its own because of the helical grooves cut into it.

How much affect does the muzzle crown have on accuracy? I have heard it's critical and it doesn't matter much...

You heat treat before rifling? Another question, have you done cryogenic treating as well? As a normalizing agent? Would this be as well for 416R Stainless steel? Watching all of the rifling videos in order. Sorry it's been a long night.

I just had a thought (probably a stupid one). Rotating a projectile through the grooves of a rifled barrel requires energy. If we consider a full lenght battle rifle barrel for instance, could we get away with rifling just the last third or last quarter of the barrel while leaving the first part of the barrel smoothbore? During the first 2-thirds of the barrel, energy would be spent on acceleration alone. The last third of the barrel would give the bullet its spin. Would we see a worthwhile increase in bullet speed at the muzzle?

I used to think the finish of my taurus barrel was good, one day I got a chinese borescope and I saw how crude it is. Seems to be finished with low gritt sand paper. I have an old UZI barrel (the last five inches of a 16 inch barrel) and its finish is much better than the Taurus. Did you make something to improve the finish? Maybe a little lapping?

Cool to see how my Rn50 was made! 😂😅😂 Seriously tho, interesting, Thank you

✋🏼🇦🇺👍🏼