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Old 12-30-2013, 09:39 AM   #1
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Default Chingarian AK-74S

probably the most interesting AK i have planned as of yet.



Bulgy Parts Kit
Bulgy original NOS 74 Barrel
Chinese polytech sidefolder.

only thing i need to figure out is how to shim the stock to standard ID for a 74 receiver. any suggestions appreciated
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Old 12-30-2013, 10:08 AM   #2
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I don't know how much you need to shim. However, shim stock (thin metal) is available, and can be easily cut to shape.

Perhaps Gorrilla(s) glue can be used to hold it in place for hole drilling and installation.
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Old 12-30-2013, 10:10 AM   #3
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When I saw your thread title, I thought "Chinese + Hungarian", and was expecting something more exotic
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Old 12-30-2013, 10:12 AM   #4
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Quote:
Originally Posted by nalioth View Post
When I saw your thread title, I thought "Chinese + Hungarian", and was expecting something more exotic
with my infamous "just girls" thread i guess i see where your getting that idea
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Old 12-30-2013, 10:13 AM   #5
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Quote:
Originally Posted by Shadow Walker View Post
I don't know how much you need to shim. However, shim stock (thin metal) is available, and can be easily cut to shape.

Perhaps Gorrilla(s) glue can be used to hold it in place for hole drilling and installation.
the glueing sounds like a good idea. ony a few thousands really. i need to buy a mic but its not much, but just enough it does need shimmed
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Old 12-30-2013, 10:16 AM   #6
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I like it.

You could just use some shim stock for the rear.
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Old 12-30-2013, 10:20 AM   #7
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Quote:
Originally Posted by keiffith View Post
the glueing sounds like a good idea. ony a few thousands really. i need to buy a mic but its not much, but just enough it does need shimmed
you dont own a mic ??
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Old 12-30-2013, 10:23 AM   #8
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you dont own a mic ??
no. im 23, and i had mic's in the USMC. i really need to get some. probably will when i return my torque wrench i got from harbor freight for X-mas.
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Old 12-30-2013, 10:25 AM   #9
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I like it.

You could just use some shim stock for the rear.
thanks. i have always had an affection for the Chinese side folders.

i looked up shim stock at brownells and low and behold they have some. will definitely be ordering some with a few other things i need.
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Old 12-30-2013, 10:29 AM   #10
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Look for used mics, before you buy new, there might be a good deal on a more quality brand. Ebay or Craigslist

Also, if you need to buy any machine shop stuff (drills), order your shim stock from a machine shop supplier because it will probably be cheaper than brownells.
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Old 12-30-2013, 11:12 AM   #11
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For shims you need 1mm or two shims at .020" each. +/-. Standard US duct pipe or pipe hangar straps are .020" +/- no need to buy shim stock. Cut pieces from a hanging strap and done.
No need for glue as you rivet them in place with the trunnion to receiver.
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Old 12-30-2013, 11:40 AM   #12
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Please don't use glue. LOL.
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Old 12-30-2013, 11:41 AM   #13
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Chinese sling and bayo might be a nice touch.
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Old 12-30-2013, 11:43 AM   #14
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Try locating some black plastic pieces for that folder, that would complete the look.

I also like the Chinese side folder, I find it more elegant than the Russian folder.
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Old 12-30-2013, 11:45 AM   #15
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Quote:
Originally Posted by keiffith View Post
no. im 23, and i had mic's in the USMC. i really need to get some. probably will when i return my torque wrench i got from harbor freight for X-mas.
Harbor Freight has decent enough dial calipers for a good price. Find one of the 20% off coupons fir Harbor Freight in a magazine or a flyer and the deal gets better. When you return the torque wrench get the caliper and or tin snips for the shim cuts from the pipe hangar stock etc.
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Old 12-30-2013, 11:46 AM   #16
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Another option would be to source one of those 1.5mm ausa receivers.
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Old 12-30-2013, 11:55 AM   #17
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Quote:
Originally Posted by valleyrat View Post
Another option would be to source one of those 1.5mm ausa receivers.
Then you have to cut down/narrow the front trunnion. Not that difficult but a necessity.
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Old 12-30-2013, 01:01 PM   #18
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I have used shim stock before on a firearm (can't remember which one) and you really do need to lock it in place before trying to install it. That is why I suggest glue. I know if I use shims again I will glue them in place first.

Otherwise, expect to get very aggravated.
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Old 12-30-2013, 01:14 PM   #19
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You insert and align he shims with the trunnion. C-clamp the assembly in place and drill the holes etc. Insert rivets and crush as usual.
Not saying you cannot use glue but not needed IMHO and experience.
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Old 12-31-2013, 01:14 PM   #20
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Quote:
Originally Posted by AKBLUE View Post
You insert and align he shims with the trunnion. C-clamp the assembly in place and drill the holes etc. Insert rivets and crush as usual.
Not saying you cannot use glue but not needed IMHO and experience.
cool.
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Old 12-31-2013, 09:03 PM   #21
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Here is a Harbor Freight Code=79710844
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Old 08-20-2014, 01:46 AM   #22
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update- i recently started working at a place that has almost every machining tool imaginable, including ECM carbon "burning", so this build as well as my other 2 franken rifles will begin more progress here shortly.
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Old 08-20-2014, 06:01 AM   #23
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Even the Chinese decided that an MP-40 under folder wasn't the best choice for a rifle and designed their own side folder.
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Old 08-20-2014, 06:50 AM   #24
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www.mcmaster.com for shim stock and I agree with finding a good mic. I found all of mine at a estate sale for $15.
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Old 08-20-2014, 03:46 PM   #25
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Quote:
Originally Posted by valleyrat View Post
Try locating some black plastic pieces for that folder, that would complete the look.

I also like the Chinese side folder, I find it more elegant than the Russian folder.
Or maybe some Chinese phenolic handguards?
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Old 08-20-2014, 04:15 PM   #26
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Chinese stock is .5mm narrower than Combloc, leaves .25mm gap each side.


.25mm = .010"

Get some .010" shim.


t
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Last edited by Trueno; 08-20-2014 at 06:08 PM. Reason: changed .0010 to .010
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Old 08-20-2014, 04:25 PM   #27
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Sweet idea, I like it.
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Old 08-20-2014, 06:00 PM   #28
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Quote:
Originally Posted by Trueno View Post
Chinese stock is .5mm narrower than Combloc, leaves .25mm gap each side.


.25mm = .0010"

Get some .0010" shim.


t
.25mm is .010" You can convert metric to English Standard by multiplying by .03937" I.E. 23mm x .03937= .90551
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Old 08-20-2014, 06:09 PM   #29
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Quote:
Originally Posted by Zim Antics View Post
.25mm is .010" You can convert metric to English Standard by multiplying by .03937" I.E. 23mm x .03937= .90551
I did it better/easier than that,
just goofed when I posted ten ten-thousandths instead of ten thousandths.

edited my post.


eta - busy with a mic getting every measurement known to man of a Chinese UF front sight base, 0's are still running together LOL!

t
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