FGC-9 Rifling Mandrel - How I Succeeded

Update on my ABS FGC-9 and how I successfully created my rifling mandrel. I had a lot of difficulty getting the mandrel printed and threaded with copper wire. Tips and modifications I made that helped me succeed.

[@scapegoat1313]

Ive drilled out a 9mm barrel from round stock, and made my own 3-sided rifling buttons to hammer through the barrel. Then finished the job with a round file by hand. It was shitty by factory standards, but worked. Stabilized the bullet perfectly. It made a sort of polygonal style rifling instead of grooves. Much better

[@Tatuador_instante]

Mano tem esse defeito mesmo

[@amphoravideo]

Outstanding!! I haven't researched how to do that...yet. I'm VERY interested, though.

[@DLDafterDark]

Dude. Great job. That shits money.

[@amphoravideo]

Thanks! :-)

[@max3dlee]

OUTSTANDING!

[@pennyformythought]

ahahha dude I recognize this firearm from way back you posted it in weightforward or AWCY and I was the one who thought it was all metal and I think you said it was painted but now it seems you actually did an all metal...LOVE IT so fun

[@Fearlessjosh]

hello, great video. where can i find your rifling mandrel stl file ?

[@carlton997]

just found your channel. I want to try a fgc 9 myself do you have any recommendations on were to start? there's plenty of videos on the fgc9 but none that's for the dumb guy. great videos

[@amphoravideo]

Honestly, the best advice I can offer is don't be in a hurry. Be willing to fail several times. Learn from your mistakes and keep trying. Making the bolt and barrel are the most challenging parts but they can be purchased.

[@Sleepyjamal039]

Is it possible to use one of these ECM Kits for a longer barrel? I mean a longer kit for a longer barrel.

[@amphoravideo]

It can absolutely be done but you might have to design a longer mandrel. Someone probably has designed one by now but it might take some searching

[@hersenskim]

How is your accuracy of the progressive rifling vs the standard rifling?

[@jacobstaten2366]

What type of pipe do they recommend you use? What inner an outer diameter?

[@amphoravideo]

It's a high strength hydraulic pipe. I think they call it "explosion proof" but I'm not sure that's a real term. maybe? I believe the inner diameter was 8mm. Not sure about the OD but I bet there aren't many options.

[@diogocoelho496]

hey nice video how many time it took to have the perfect size?

[@notcraig2239]

I love how your fgc is simultaneously ugly as hell and cool looking as hell, keep it up

[@joyambrosealmeida2715]

Do I really have to rifle the barrel? What if I don't?

[@amphoravideo]

I imagine it would work but wouldn't be nearly as accurate.

[@josemartinez-lo4dh]

can I do it with a 30V 5 amp power supply?

[@amphoravideo]

I suspect you could make it work. Lower current would impact the cutting times but…that’s not a big deal. You might need to put a resistor or a small light bulb in the circuit to bring down the current and keep from killing the power supply.

[@sovietyunyun7566]

What is the inner and outer diameter of the hydraulic tubing you used?

[@LuxGamer16]

Everything you need is in the documentation of the FGC-9 mk II.

[@bluepoint5786]

​@@LuxGamer16 do you have It?

[@pussymagnet9474]

@@bluepoint5786 its very accesible, just google

[@МатвейМалинин-щ4ф]

А готовые стволы не покупаешь?

[@protennis365]

How hard was it to rifle the barrel?

[@isaiashernandez9223]

mannn if you don't take your marsey the cat ahh pfp back to wpd

[@R3N0T3]

In case you care at the end of the video the ancient Greek saying is spelled wrong at the last letter. The correct way to write it is ''ΜΟΛΩΝ ΛΑΒΕ'' with a capital ''E'' at the end instead of the Greek letter for ''s'' which is ''Σ''. I hope this comment is not treated like an annoying comment as I am not writing it out of the need to correct everybody else but I thought you may find it interesting. P.S. If you want to pronunciate it its ''mole - on (pause) love-E'' with the last capital ''E'' saying it like the first e of the word ''everybody''

[@olibarahosasa1137]

You must learn to let it go.

[@amphoravideo]

Interesting....Much appreciated. 🙂

[@darklord-ht2hq]

Couldn't you just use an appropriate size spiralled reaming bit

[@TheBigKiko]

What kind of camo filament is the FGC made of?

[@amphoravideo]

It's actually just a dark gray ABS filament. I painted it with camo paint. Then lightly sanded, revealing the print lines.

[@RW-of3pn]

@@amphoravideo What color/colors did you use?

[@amphoravideo]

@@RW-of3pn I used Krylon Ultra Flat Camo spray paint. I don't know the specific color names but one is basically desert tan and another a dark forest green. A little black as well. The reddish areas are actually automotive bondo (which btw, is my favorite method of smoothing prints. It fills in the print lines and will sand glass smooth.)

[@lgbtqisahategroup9781]

@@amphoravideo Beautiful work.

[@amphoravideo]

@@lgbtqisahategroup9781 Thank You very much!!

[@racingrr9706]

Hello, I have the outer Ø16 tube and inner Ø8. But the mandrel is 9mm in diameter and does not fit through the Ø8mm tube, how do you do this process? Thank you

[@amphoravideo]

You have to use a solid metal rod inside the pipe to evenly enlarge the pipe’s ID using the ECM process. When it’s large enough, the mandrel will fit. The process is covered in the FGC-9 instructions. They might be a bit hard to find but they’re out there.

[@fazrulrusdi3709]

Subscribed

[@Deterrent-xz5zz]

Welding wire instead of copper? Interesting

[@hanelyp1]

Sounds like a workable option. The wire doesn't have to carry too much current. And the same current that's eroding the work piece is protecting the wire from corrosion.

[@falcon5751]

@@hanelyp1 it's not about its electrical potentional, more about the coating used on it. It has to be bare, coatings will prevent the chemical reaction from happening

[@amphoravideo]

good point. I didn't think there was a non-conductive coating on the wire but lightly sanded it just to be sure. It worked well.

[@TheSapShop]

I'm building on now but I think I'm going to buy a glock barrel for 60 bucks on ebay

[@amphoravideo]

I'd love to hear how that works out. I bet you get better accuracy.

[@DaveSmith-cp5kj]

For $60 you can buy the materials to ECM your own barrels and have more.

[@3darms]

@@amphoravideo I've done two with glock barrels and they work well, but there's something special about the ecm method in terms of awesomeness

[@kaptein1247]

@@DaveSmith-cp5kj Which will cost you a lot of time and thus also money

[@mkhd1355]

I used a Glock barrel as a stepping stone in my FGC-9 journey. From here on out, it's ECM all the way. The bragging rights that come with building a complete 100% DIY firearm (meaning zero commercially manufactured gun parts used) far outweigh the cost and time involved with ECM.

[@filippaoronto3880]

Molon Lavs

[@blooodful]

Awsome man you should create an Discord server and put instructions on there how to build this gun/rifle. Mabe there is a Server for this? Super interesting.

[@notcraig2239]

fed

[@leonfernando6359]

fed

[@fluffypinkpandas]

ppl like this is why my server is mostly a shell that hides a Matrix bridge behind perms

[@HoneyBerighthere-Saysarath]

3D print everything. Even rocket launcher.

[@jozsefienciu2325]

IT'S FASTER WITH RIFLING BUTTON