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View Full Version : Am I missing anything? (AK Build)


Rekrab
07-21-2010, 8:04 PM
OK, so I'M getting ready for my first AK build, a Yugo RPK. I already ordered my 1.5mm Yugo flat, slant break, and rivet set from AK-builder. What else should I order? All I have to go on is a picture, so I don't have an exact parts list.

http://pics.gunbroker.com/GB/178867000/178867276/pix883519406.jpg

One thing I am worried about, how does 922r compliance work with these home builds? Do I need to do replacement on enough parts to get compliant?

Thanks for any help!

nicoroshi
07-21-2010, 8:14 PM
>>>This might be helpful to you<<< (http://gunwiki.net/Gunwiki/BuildAkVerifyCompliance)

Have fun, and beware! Building AKs is addictive!

BLD
07-21-2010, 8:20 PM
On most AKs you need to replace 6 parts to meet 922(r) compliance. I'm not sure if the Yugo RPK is any different. I'd recommend getting a Tapco G2 fire control group. It counts as 3 US parts. Do not use the FCG parts from your parts kit, they may be FA and should be disposed of/gotten rid of properly. Do, however, keep the springs and pins that come with it.

With the G2, flat, and muzzle break you will be 1 US part away from being compliant. I recommend a US made pistol grip for that. From what I'm told it is easier than buying a gas piston, and better than using mag parts for compliance parts (you never know when you may slip in a foreign made mag.

The only other things I see missing are some 10 round mags (or 30s if you have them legally), a solar tactical mag lock or kydex grip wrap, and some ammo.:)

*Don't know if you ordered it with you flat and rivets, but I believe you'll need to order a center support rivet as well.

Shady
07-21-2010, 8:21 PM
you beet to get a g2 tapco trigger group and a bullet button

E-120
07-21-2010, 8:42 PM
Nice kit. Buy a FCG retaining rail as well. It keeps in all your pins. It should only be like 7 dollars.

Rekrab
07-21-2010, 9:01 PM
On most AKs you need to replace 6 parts to meet 922(r) compliance. I'm not sure if the Yugo RPK is any different. I'd recommend getting a Tapco G2 fire control group. It counts as 3 US parts. Do not use the FCG parts from your parts kit, they may be FA and should be disposed of/gotten rid of properly. Do, however, keep the springs and pins that come with it.

The RPK is usually built as a machine gun, so yeah... I probably will need to completely ditch the FCG, I hadn't considered that. What's the difference between a single hook and double hook kit, I can't seem to find a clear answer.


The only other things I see missing are some 10 round mags (or 30s if you have them legally), a solar tactical mag lock or kydex grip wrap, and some ammo.:)

Still debating on whether I want to go with grip wrap or mag lock. I might start off with the lock and see how I feel about it, since I have the slant brake already and no evil features apart from the pistol grip.

*Don't know if you ordered it with you flat and rivets, but I believe you'll need to order a center support rivet as well.

It looks like AK builder doesn't have a 1.5mm receiver center support, maybe it doesn't need one?

>>>This might be helpful to you<<< (http://gunwiki.net/Gunwiki/BuildAkVerifyCompliance)

Have fun, and beware! Building AKs is addictive!

Yup, I'm acquainted with that, wasn't sure if I needed to worry about 922r was the issue. Hopefully my budget will keep me from building any others.

Nice kit. Buy a FCG retaining rail as well. It keeps in all your pins. It should only be like 7 dollars.

Are these what you're talking about? http://www.ak-builder.com/index.php?dispatch=products.view&product_id=29851 My receiver came with them.

8bitnintendo
07-21-2010, 9:12 PM
What's the difference between a single hook and double hook kit, I can't seem to find a clear answer.
An extra hook ;) Okay, now I'm done being a smart***, the single hook will work with the AK-Builder flats as-is. Some people prefer the double hook on the extremely off chance that one of the hooks snaps off, so you still have a functional weapon. You can just dremel or file out another notch in the flat if you want a double hook trigger kit.

For the trigger retaining plate, I think the original poster meant this FCG pin retaining plate:
http://www.ak-builder.com/index.php?dispatch=products.view&product_id=29836

E-120
07-21-2010, 9:29 PM
These
http://www.ak-builder.com/index.php?dispatch=products.view&product_id=29836

Rekrab
07-21-2010, 9:30 PM
Cute 8bit :p

But that explains it, so there's no real need for one, that's good to know.

The pin retaining plate isn't strictly necessary though right? If I end up buying more parts from AK-builder I'll probably order one just because they're so cheap.

69Mach1
07-21-2010, 9:31 PM
Cute 8bit :p

But that explains it, so there's no real need for one, that's good to know.

The pin retaining plate isn't strictly necessary though right? If I end up buying more parts from AK-builder I'll probably order one just because they're so cheap.

Order one. It saves so much hassle.

69Mach1
07-21-2010, 9:33 PM
1.5mm center support.
http://www.ak-builder.com/index.php?dispatch=products.view&product_id=30099

SJgunguy24
07-21-2010, 9:33 PM
How do you plan to attach the lower rails? MIG or spot weld?

Rekrab
07-21-2010, 10:24 PM
How do you plan to attach the lower rails? MIG or spot weld?

Not sure, someone else is helping me with this build.

SJgunguy24
07-21-2010, 10:44 PM
Not sure, someone else is helping me with this build.

Is tht person an experianced builder?

HotRails
07-21-2010, 10:47 PM
Order one. It saves so much hassle.

I've heard of instances where people have taken the sear spring (the long paper clip like spring in your picture) and bent it into a crude sheppards crook to substitute for the real crook or redstar retaining bracket. But really, the bracket it's so cheap and is really just alot easier to contend with. This will be one of the last steps of your build and by that time, you probably will be too tired to want to contend with an annoying spring. A retainer is necesary since the pins can become unseated without it.

Most of the parts kits were originally assembled as select fire, and may by accident contain illegal parts despite requests on the part of the purchaser not to include them. Oaklander did an excellent thread on this. The parts in question should be discarded immediately.

Good luck on your build and you might want to consider spot welding your lower rails, its alot easier than MIG.

Refer to this thread for general information about building:
http://www.calguns.net/calgunforum/showthread.php?t=86627

And this thread about the select fire parts:
http://www.calguns.net/calgunforum/showthread.php?t=84417

You may also want to print out a copy of the ATF letterhead provided in the first thread to include in your rifle case once your build is finished. This will aid with during an LE contact when questions arise as to why your rifle has no serial number.

Rekrab
07-21-2010, 11:42 PM
Is tht person an experianced builder?

Very experienced. I'll let him out himself if he wants.

I've heard of instances where people have taken the sear spring (the long paper clip like spring in your picture) and bent it into a crude sheppards crook to substitute for the real crook or redstar retaining bracket. But really, the bracket it's so cheap and is really just alot easier to contend with. This will be one of the last steps of your build and by that time, you probably will be too tired to want to contend with an annoying spring. A retainer is necesary since the pins can become unseated without it.

Well that tears it, guess I'll buy one since I need a few other things from AK Builder anyways.

Most of the parts kits were originally assembled as select fire, and may by accident contain illegal parts despite requests on the part of the purchaser not to include them. Oaklander did an excellent thread on this. The parts in question should be discarded immediately.

Will do.

Good luck on your build and you might want to consider spot welding your lower rails, its alot easier than MIG.

Refer to this thread for general information about building:
http://www.calguns.net/calgunforum/showthread.php?t=86627

And this thread about the select fire parts:
http://www.calguns.net/calgunforum/showthread.php?t=84417

You may also want to print out a copy of the ATF letterhead provided in the first thread to include in your rifle case once your build is finished. This will aid with during an LE contact when questions arise as to why your rifle has no serial number.

Yup, already read through the first one and will be keeping the letterhead on hand. I've done the OLL thing so I keep the SacPD and Flowchart in my bag.

Gah! Can't wait for this to get under way!

Rekrab
07-22-2010, 10:21 AM
OK, I just put in my last order at AK builder for the rest of my 922r stuff and the retaining bracket. Provided nothing is missing or broken from my kit, I'll have a working RPK for about $400! :eek: Granted, I got a killer deal on my kit, but if I could consistently build AKs that cheap I can see how it would be addictive.

Z ME FLY
07-22-2010, 10:25 AM
OK, I just put in my last order at AK builder for the rest of my 922r stuff and the retaining bracket. Provided nothing is missing or broken from my kit, I'll have a working RPK for about $400! :eek: Granted, I got a killer deal on my kit, but if I could consistently build AKs that cheap I can see how it would be addictive.

What?!?! Can I have one too? Haha... So that means you got the RPK kit for around 275, 300 yeah?

Rekrab
07-22-2010, 10:43 AM
$260, got lucky on a no reserve auction on Gunbroker. The guy I bought it from seems legit and genuinely supports the 2A, including in California. He even wrote a nice little e-mail about how happy he was to send stuff to California and spread the 2S love.

HotRails
07-22-2010, 8:14 PM
$260, got lucky on a no reserve auction on Gunbroker. The guy I bought it from seems legit and genuinely supports the 2A, including in California. He even wrote a nice little e-mail about how happy he was to send stuff to California and spread the 2S love.

Wow. Wish certain vendors had a constructive attitude like this!

bigthaiboy
07-22-2010, 8:38 PM
Here's my M72 RPK I built about 3 years ago on a NDS receiver.

The compliant parts I used were :

Tapco G2 FCG
NDS receiver marked "CAI M72 RPK"
MMG grip (-1 imported part, as opposed to replacing an imported pistol grip)
Muzzle brake

You'll be surprised how heavy this thing is. The weight is all in the barrel. You won't see too many at the range.

http://i136.photobucket.com/albums/q163/bigthaiboy/M72RPK2.jpg

PS: $260 for your kit is a bargain. I paid $200 for my kit 3 years ago, back when Romie G kits were $99 every where.

Rekrab
07-25-2010, 11:17 AM
Crap, I just thought of something. I'm used to them being sold together with muzzle brakes, but will I need a crush washer for my slant brake?

bigthaiboy
07-25-2010, 11:33 AM
Crap, I just thought of something. I'm used to them being sold together with muzzle brakes, but will I need a crush washer for my slant brake?

No need for a crush washer. The AK / RPK front sight hood has a sprung locking pin, which locks into a notch in the slant brake.

Rekrab
07-25-2010, 11:36 AM
Sweet, I was wondering why there was a notch in it.

Rekrab
08-04-2010, 11:45 AM
OK, so I've got my kit and I'm cleaning it up because it's covered in a ton of cosmo.

But now I've got a new question for all of you. On my Saiga there's a scope mount bracket on the side. Is this something that can be welded up to a flat? I haven't see any on AK Builder and google only yields actual scope mounts for mounting on said bracket.

CSACANNONEER
08-04-2010, 11:47 AM
bigthiaboy has found and installed scope rails before. I'm sure that he can point you in the right dirrection.

Rekrab
08-04-2010, 11:54 AM
Thanks, if he doesn't respond in here I'll hit him up in PMs or something.

I will say, that barrel is HEAVY. The rifling is OK, especially for an old Yugo. It's pretty shiny but there's some minor pitting in the grooves and the end of the bore looks pretty shot out but it still passes the bullet test. I'm hoping with the heavy, long barrel and slant brake I can get some decent accuracy out of it since it's not like I can use it as originally intended anyways.

Something weird I noticed is that the front trunnion has "M70B1" stamped on it, while the features of the rifle clearly show it to be an RPK. I'm wondering if this gun was pieced together since many of the serials are electro penciled on rather than stamped.

NorCalDustin
08-04-2010, 12:16 PM
These
http://www.ak-builder.com/index.php?dispatch=products.view&product_id=29836

I installed my fcg yesterday and it make stuff WAY easy...

bigthaiboy
08-04-2010, 12:39 PM
Strictly speaking, the M72 RPK never came with a scope rail, but if you want to install one, this type would be "correct" for an AK scope mount: http://www.royaltigerimports.com/component/virtuemart/?page=shop.product_details&flypage=flypage.tpl&product_id=66&category_id=31

It mounts on similar to the one on your Saiga, so should be able to share the side mount with it. I used a combination of trimmed AK center support rivets ($3.00 each @ RCM gun parts) and regular AK trunnion rivets. The rail has to be mounted in perfect line with the top rail of the receiver.

Rekrab
08-04-2010, 12:46 PM
Thanks bigthaiboy! Yeah, I know mine wasn't MEANT to have one, but if I can't have a class 3 RPK I may as well do something else interesting with it right? :43: We'll see how I feel about it after I take it out for the first time.