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Discussion Starter · #1 ·
Friend of mine has a flat receiver he wants to use for his Yugo kit build. He asked me if trimming the trunion down on the RPK style trunion would have any effect?

I told him if you don't plan on launching grenades with it, it should be ok like other similar trunions. Was I right?


I told him don't be a cheapskate, go and get the right receiver for that trunnion. But I think he made up his mind. :sad:
 

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Trimming them down is fine. Look at the 1.6 mm global sells.


Getting the real deal is a better solution.
 
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i have heard mixed answers on cutting down the RPK style yugo for a normal receiver. the most popular answer was don't (something to do with the locking lug recesses), but i don't know for sure either way.
 

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I could be wrong about the trimming. :confused:
 

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This question was addressed early in the yugo saga.
You risk having the trunion crack.
DO NOT mill it flat.

Get an 80% with bulges and go from there.


:cool:
 

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Discussion Starter · #6 ·
gaucho1 said:
This question was addressed early in the yugo saga.
You risk having the trunion crack.
DO NOT mill it flat.

Get an 80% with bulges and go from there.


:cool:


In what way would it crack? When pressing the barrel back into the trunnion or just from shooting it a number of times?
 

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Cutting it flat takes material off where the bolt lugs lockup on the trunion.
This makes the one place you don't want to fail weaker.

I has been done and credible reports of cracking have been reported.

That said,you can always try and see what happens for you.
I would check it carefully before, during and after firing to be safe.

Good Luck :cool:
 

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Discussion Starter · #8 ·
gaucho1 said:
Cutting it flat takes material off where the bolt lugs lockup on the trunion.
This makes the one place you don't want to fail weaker.

I has been done and credible reports of cracking have been reported.

That said,you can always try and see what happens for you.
I would check it carefully before, during and after firing to be safe.

Good Luck :cool:

Thanks for the info. I'll let him know. Im glad he hasn't started the project yet, maybe now I can convince him to do it right. :smile:
 
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