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Discussion Starter · #1 ·
The Krinkov Forum has sure been dead this week.

Thought I would post some pictures of Tula Krinkov parts just to try and stir up some activity!


Gas Booster and FSB



FSB/GB note the mold numbers and Pinch Welds




Front End


Gas Tube End View



Gas Tube Side View



Hand Guard Retainer note the tapered release lever



Folder Stock Trunnion with Proof Mark



Safety/Selector Lever note mold marks and number



Left Side of Bolt Carrier



Bottom Side Bolt Carrier



Hing Block




Hand Guards Early - Mid - Late Production



Late - Mid - Early


Stocks Russian Izzy - Bulgarian - Tula Early/Mid - Tula Late



Rear Sight Note the Distinctive Tula Style "4"
 

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Discussion Starter · #3 ·
Sorry they are already boxed and shipped to Ted.
 

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jithaca,
What years classify the weapon as early-mid-late?
 

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Discussion Starter · #6 ·
I am sure some of the other folks on this site could do a better job
with this answer, but here goes.

Development activity was complete by 1979 (Izhevsk arsenal).
Tula arsenal started production in 1979 and ran until 1989 for Soviet
Military use. Production continued at Tula until at least until 1993 for
export. Also Izhevsk arsenal did special production runs during the entire
build time. So I would say that early production Krinkovs would be 1979
until 1884. Mid production starts in 1985~86, this is when they switched to
non-vented hand guards (still have the deep cut finger guards for a short
period of time?) and started press/punch mounting of the FSB and hinge
block to the barrel. I do not know when they switched to the dual rivet
feed ramp in the trunnion, shallow finger grooves, and the more deeply
rolled over butt stock struts. I would say anything after 87 would probably be late. The Krinkov much like the AKM continued to have minor changes
through production so there really is no definitive early, mid, late
production rifles. Some of the things such as the different embossing
pattern on the safety lever, shallow cut hand guards, and deep rolled
stock strut’s may all be from post Soviet era rifles or export versions.
The main reason for using these terms is to show a order of use for
differnt versions of a particular part.
 

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Excellent information!
I was looking at my Russian handguards and comparing them to your picture and they appear to be mid-production (non-vented and the finger grooves deeper).
Here's another question for you:
On the bottom of the front sight block are two small bumps. On some Russians they are open on the left side, on Bulgarians they are open on the right. Then again, some Russians (as in your picture above) they are completley closed. On a Bulgarian these holes don't protrude into the barrel area, so they would be of no use in securing the FSB to the barrel (although there is a hole between the bumps.) So what is the purpose of the bumps?
I'm getting some final details down before I embark on my build.
 

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Discussion Starter · #8 ·
These are starting holes for drilling the FSB/barrel assembly pin holes.
After the the FSB is positioned on the barrel you would align the assembly
in you drill press and drill through, using these for starter holes. Then pin
the FSB to the barrel. When the Russian went to the punch press method
of attachment they did not re-design the FSB so the humps for the FSB pins are still there.

I noticed that the picture you posted has a mold number. If this is your FSB where did you aquire it?
Thank
jithaca
 

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The mold number is 4.
This came from a virgin Bulgarian AKS-74U set I bought about 5 or 6 years ago from Chief.
I was thinking of doing a false punch press for looks, but actually doing the pins and welding over the holes.
 

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Discussion Starter · #10 ·
Looks like one I bought from Global Trades back in the early 90's. My guess is that it is Russian. What does your stock look like, ribbed or smooth. rolled strutt or not?
 

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Ribbed, non-rolled, 4mm pin.
I've gone round and round trying to get a correct stock. Not so much concerned with pin diameter, but need ribbed and rolled.
AndyArts sent me a smooth rolled (AKS-74?). I sent it back.
He sent another and it got snagged by Customs. It sits in Orlando right now.
He then sent a ribbed, non-rolled. He insists this is correct for a AKS-74U. I went ahead and kept it, maybe for another project.
 
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