AK47 Kitchen build Rear trunnion rivet installation Tothtool.wmv

In this installment of our AK kitchen build series we use the Tothtool rear trunnion rivet tool to install the center support rivet and the rear trunnion rivets. You would also use this on the long rivet on a Yugoslavian front trunnion. Once again it was done without a 20 ton press or a rivet gun or rivet set. I love how it all worked out! Finally a set of tools that would let a guy living in an apartment build his AK.

[@luciankristov6436]

I can't believe its been 11 years since this video was released. I started building AKs way then and watched all your videos. Time flies !

[@Bolo2028]

Thank you very much! No one does better instructional videos on AK builds than you do.

[@ginsboy2003]

Before installing the rails I check the ejector for being square then I use a MAPP to to heat it up red hot then keep it red hot for 1 min before quenching in water. I do the same to the right rail and fire control group holes. After the railsare welded in place I put the whole receiver in the oven for 1 hr at 500F to remove an brittleness that may have been put in the metal.

[@ipdjbt]

Live the series! You're influencing me to buy the entire tool set although I have only one kit to build.

[@ginsboy2003]

I don't know. I've install several and just took care to keep the top of the side rail aligned with the top of the receiver perfectly. I used the rear of my dial caliper to measure it and make sure it was on within .002 or so. I guess thats something I'll have to make a video of.

[@ginsboy2003]

The shop tail in on the other side of the receiver, the flatter head is on the selector side and it doesn't interfer at all.

[@ginsboy2003]

The receiver I made from a flat. The only part of it thats heat treated is the fire control group holes, and the inner rails. I've heard of guys trying to heat treat their entire receivers, but with out special jigs to clamp them in they warp badly. NDS receivers are all heat treated if you care to buy your own.

[@EvanDrince]

This was so cool of you to make this series. You have inspired me to do an 80% kit.

[@ginsboy2003]

The easiest more expensive method is to buy modified jaws for the harbor freight spot welder and spot weld them in. I drill 5 holes in the receiver where the welds would be and rosette weld them in. My method takes longer to clean them up to make it look nice but it works.

[@ginsboy2003]

For a Nodak, take a metal block that you can put in a vise, and put it inside the receiver to support the hole. It also, needs to have a hole in it, slightly larger than the river hole or a countersink. Use a large punch, or a old hardened lathe center create the dimple.

[@ginsboy2003]

I built a Cetme on a Century Arms cast stainless receiver. A few months later they started selling the HK flats so that was a bummer.

[@ginsboy2003]

Thanks for the compliment! Pass the links on to your friends!

[@WestCoastFront]

Informative video, just received mine in the mail today. Also ordered my jaws small rivet today. Very excited to start my project 😁

[@Raptormeatx]

Did you use your tools yet? How did it work

[@HustleMuscleGhias]

Watching this video made me ponder a different way to use this tool. My thought is that instead of using the bolts as the driving force to crush the rivet, use the two bolts as guide rods and use a shop press on the top bar in order to make the tail on the rivet.

[@ginsboy2003]

Sure you could use it that way. The thing is, the tool was made for guys who didn't have a shop press.

[@danielgiles5420]

You have done a wonderful job on these videos thank you.

[@ginsboy2003]

If you watch my AMD65 flat bending video I show how I dimple the receiver on the front trunnion for the neck swell rivets. I support the trunnion at the mag well, and drive the neck swell in place. Then I squeeze it. Works great. On the rear trunnion, you could just use a large center punch in the hole, give it a whack and it will dimple the metal. You don't want to countersink the metal by using a cutting tool.

[@ginsboy2003]

Yes, you will need to contact them through the "contact us" link on their page. They will hook you up.

[@dakotagodfrey9138]

So does the tail go towards the screws or towards the table? Needing to fix my rivets on my rear trunnion and I’m a little confused

[@ginsboy2003]

I believe you could use the rivet squeezer that I used on the forward trunnion. You would just have to be careful not to squeeze it too much since it is longer.

[@kendalledmunds673]

So to dimple the receiver for the swell neck rivets, do you just whack it with a hammer till its flush with the receiver? Does this work with the front trunnion too? Also, is the process different with a hardened receiver that isnt dimpled yet, like a childers?

[@jacob-tl3is]

Is forming the rivet head before pressing the rear trunnion rivets the best way to use with this tool?

[@Svytorius]

Thank you so much for these videos. They're exactly what I've been looking for.

[@1911brian]

THANKS ALOT!!! And thanks for putting up such informative videos. By far the best on youtube.

[@Robosan4000]

How do you plan to finish the metal of the receiver and barrel for this build? Parkerize? All the kits now seem to have these non-finished American barrels. I was wondering how that's handled.

[@Vaderghost20]

So, you did heat treat the inner rails and fire control group holes? If so, what was your method to doing so?

[@80sninja]

Awesome videos!! Cant wait to put my first kit tgether after watching these.

[@Vaderghost20]

Was the receiver heat treated before you started the riveting process? If so, did you treat it yourself or was it pretreated when you got it?

[@1911brian]

Im about to install a side mount base on my ak. My question is, how long does the rivet 'tail' need to stick out? It looks like the long rivet I have to go through the rear trunion and scope rail the rivet will stick out about 0.15" . Is that gonna be enough to form a good rivet?

[@ginsboy2003]

I'm not sure what you mean, a side mount scope mount, or a side folding stock?

[@ginsboy2003]

Yes, it will work with it. I love the yogo stock style, are you just wanting to go with a synthetic stock?

[@makun16]

Do they have a tool for forked trunnions? Those can be troublesome to install the rivets for.

[@ginsboy2003]

Personally I have always used Brownells gunkote, but since they are out of stock and they have no idea when they will get any more I will dura coat it.

[@mikehunt6450]

What size are the 2nd set of bolts you use? Toth didn’t send a 2nd set

[@Andys051]

Hmmm I wonder if the barrel install kit would work for milled receivers.

[@MyZombiekiller666]

Thank for showing me this tool I am buying one today

[@ginsboy2003]

Ok, you won't be able to get to the rivets inside the receiver to attach the mount, but you might be able to do it with the front trunnion rivet squeezer.

[@Bolo2028]

Your videos are excellent. How important is it to dimple the receiver where the trunnion holes are dimpled, and how would you recommend accomplishing that with a Nodak Spud receiver? I do not have an hydraulic press.

[@thinkingmanhillbilly]

I think you are supposed to snug the center bolt against the receiver flat to keep the flat tight to the trunnion.

[@ozziemo27]

Love your videos, I'm planning to build an RPK-74 soon for my first build. From what I understand, using this tool, it doesn't bother countersinking the holes it just forces the rivets down into the receiver? I watched a guy using the AK builder tool and he had to countersink his holes first. Just wondering if this will matter for my build as I plan to buy this tothtool tool for the job and I will be using akbuilder rivets with swellnecks that are supposed to have a countersink. Thanks!

[@bigdg85]

Did the round rivet head have enough clearance for your selector stop?

[@HB-kp6rl]

Thinking about ordering a set of tool

[@chipngo9758]

Amazing job.

[@Utubebinge]

would you happen to know where i can find a video showing how to install a side-mount base to my receiver?

[@jlakindd]

where did u get that circular metal hammer block?

[@challusmay9481]

Do your do work for customers or?

[@BellyUpFishGarage]

Does Tothtool still make this tool? It's not on the site??

[@oiuytrewwert]

Were do you get the firearm parts and is it more expensive to build it?

[@keith68454]

How much was this tool I do not see it on there website

[@rufusleers]

Can this be used for the front trunnion as well?

[@danielotero89]

I have a WASR with a canted rear trunnion, is the only way to straighten it to remove it and reinstall it?

[@ek071391]

Your vids are great! Did you ever do the final long build video?

[@ricksorber8343]

Have you ever tried the Toth long rivet tool in a hydraulic press? I'm thinking it might be easier than working the two bolts, if the tool can handle it. Just line it up, pump pump pump, and you're done.

[@1974TypeLTCamaro]

Your video series are awesome. I love how informative they are and I am going to buy the tools from tothtool. But I do have one problem and that is welding the reciever rails into the receiver. What would your recommend to do for that. Thanks

[@mavilakam9072]

I've been wondering, what kind of vice do you use? I've seen those around but I don't know what type they are.

[@tedm73]

I cant thank you enough for your videos.

[@ginsboy2003]

It was a machinist vise I got off of ebay.

[@TWISTEDSTRINGS69]

What are you using to dimple the receiver for the neck swell rivets ? Just the rivet itself ? Did I see you use the center from a lathe ? What else would be an option ? Thanks, AJ

[@ginsboy2003]

+TWISTEDSTRINGS69 You can use a lathe center or a ball bearing being careful to backup the hole.

[@Dozer7885]

Any chance would this work on a M70 pap yugo rear trunnion? I wanted to get a yugo m70 pap with fixed stock but most after market ak47 stocks wont fit there rear block trunnion so i thought of replacing the trunnion with a standard ak47 tang trunnion.

[@ginsboy2003]

I have no idea, I think it should work the same.

[@coolclay22]

Excellent Video thanks for sharing! Does anyone know anyway I can rent/borrow this tool. It's hard to purchase a $100 piece of equipment to only use once. Does an AK build cooperative exist or anything? I am already mostly done just need to install the rivets.

[@eltenda]

great channel and video...thanks for sharing!

[@shockback6360]

Thanks this is a very informative video, appreciate it!

[@BlazerBrass]

Why is the tothtool rear trunnion rivet tool necessary? Could you crush the rivets using a just a hammer?

[@ginsboy2003]

BlazerBrass If you didn't care what they looked like you could. I like to finish the rivets with either my tools or toths to give the fastener a professional look.

[@bev8200]

I want to convert a saiga 7.62x39 and I'm wondering what trigger guard and rivet set I would use instead of bolt on. I'm not a fan of bolt on things because I feel like it's going to fall off.

[@collinis1]

You could just weld it

[@SystematicMechanic]

Thanks for the video. Could you use a Arbor Press instead of tightening the bolts one by one with a wrench?

[@ginsboy2003]

Yes that'll work.

[@eddivision15]

Nice work. Did you ever build a HK 93?

[@paulgardner5079]

2 quesitons do you still do content here in 2022? do you have content on other platfors other than youtube?

[@silvermarlon4769]

do you know what the other 2 tools in the kit are for? the u shaped piece and steel tube.

[@ginsboy2003]

Not having used it in a while, I can't think of what they are for at the moment!

[@ryguy5709]

Do you trim the rear rivets any before locking them down?

[@ginsboy2003]

Depending on where the rivets were purchased, they may need to be shortened. I have had to shorten them before.

[@MrComonroots99]

Would you please share any insight you have about installing a rear Bulgarian ak74 trunnion. I have all the Toth tool equipment. Rear trunnion has one long rivet, and two medium swell necks

[@ginsboy2003]

+JMac80one Sorry it took so long to reply. I'd use the long rivet tool, and the tothtool rivet squeezers.

[@MrComonroots99]

+ginsboy2003 thanks for the reply. I'll give it a shot. I Really appreciate your videos.

[@dam00k]

Great videos, lot's of good info. Thanks!

[@Julius44bc]

Very cool.

[@kalliste23]

Keep the vids coming!

[@4624tone]

how much is rivot tool?

[@ginsboy2003]

If your using a standard rivet set, it is important because that rivet has a shoulder and will not sit flush unless it is dimpled. Now, will you loose strength if you just use a regular rivet? It will never fail in your lifetime. It is done for extra shear strength and when the guns are fired fullauto, it gives a little extra strength. Will the holes in the receiver stretch or tear out? No. People theorize that it might, but nobody has ever seen it happen.

[@ianhall4434]

+ginsboy2003 thank you for posting these videos. I'm taking machine shop classes for a career change, and your instructions are great, I always wanted to build my own AK and I know I can now without spending a ton of money on tools I don't already have. I subscribed and am looking forward to watching more of your videos. Thanks again.

[@jaco8s1]

can you use this tool on the front trunon

[@ginsboy2003]

+jacob schumacher No, unless it has a long rivet installed such as on a M70 front trunnion. Then it could be used for that rivet.

[@jaco8s1]

thanks this does help

[@ginsboy2003]

Thats long enough. You want 1.5 times the dia. of the shank sticking out before you drive the rivet by rivet gun or squeezing.

[@IWalkTheREDroad]

Great Vid!

[@ginsboy2003]

Then you need to buy more kits ;)

[@ginsboy2003]

I believe its currently $110.

[@ginsboy2003]

At one time it was a lot cheaper to build it yourself, maybe not now. I still have kits I bought 6 years ago, they are worth a ton now. People want crazy prices for their stuff. AK-builder online is out of stock of everything and gunbroker prices are really high for kits. Tally up what it will cost you to meet 922r with US parts, and look for a kit on gunbroker or akb-builder. Compare that to buying new or used guns. Expect to pay $500 for a kit on gunbroker.

[@jeemfaxx3243]

waw

[@jdking1017]

That is a surface grinding vice lol

[@ginsboy2003]

joshua king One of the best vises I ever owned!

[@jenl3694]

I would suggest you try to talk/comment less and just stick to the instructions. I lost interest after less than a minute.

[@collinis1]

If it's just the instruction you want look them up online and stop being such a douche