Technical question: Decocking striker on TRG bolt, for storage (removed)?

emilio613

emilio613

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I was wondering, if I want to remove the bolt out of a TRG42 and store it outside of the rifle in the case, is there a way to "decock" the striker as I/after I remove it from the rifle? The bolt, as it is moved up through it's 60 degree travel, chrages the striker and the little button at the rear of the bolt appears to tell you it is chraged and ready to fire (indicator). In absolute redneck terms, I want the little button with the red indicator to disappear back inside the bolt/carrier to tell me it is not charged anymore, but after I have removed it from the rifle :p

I just don't like the thought of the spring being tensioned as I store the bolt in the case, but removed from the rifle.
Not sure if it is good for the bolt/striker/action to be left that way.

Any suggestions? I know you can do it in an AI rifle... can it be done in a TRG42?

thank you!
 
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The spring being tensioned won't hurt anything, unless you're planning to store it in an oven. You don't take the tension off of your valve springs when you park your car do you?
 
BeerBaron said:
The spring being tensioned won't hurt anything, unless you're planning to store it in an oven. You don't take the tension off of your valve springs when you park your car do you?
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Yea, true. my dad said the same thing about the tension about the struts in ym car. You don't remove the tension when it's parked, right?

I figured out how to remove the tension anyway :) (they include a tool for it, it just took some reading of the manual and logical approach to it).

Thanks for giving me some peace of mind though...:) Now I know I can leave it that way if I choose to :cool:
 
I think you really shouldn't worry about it

Having said that , in order to do this you just twist the bolt sleeve CCW ( looking from the back of your bolt ) and it will de ####. This is easy to do by hand

Don't to this unless you have the tool to ( black round plastick do hickey that came with your rifle ) to turn back the bolt sleeve ( re #### ) since you cannot re insert the bolt in to the rifle unless its firing pin is locked back. It is much harder to re #### since you must cam the firing pin back against its spring tension

Its possible to re #### without the tool but you will most likely damage the sleeve when you put pliers up to it
 
TRG-42 said:
I think you really shouldn't worry about it

Having said that , in order to do this you just twist the bolt sleeve CCW ( looking from the back of your bolt ) and it will de ####. This is easy to do by hand

Don't to this unless you have the tool to ( black round plastick do hickey that came with your rifle ) to turn back the bolt sleeve ( re #### ) since you cannot re insert the bolt in to the rifle unless its firing pin is locked back. It is much harder to re #### since you must cam the firing pin back against its spring tension

Its possible to re #### without the tool but you will most likely damage the sleeve when you put pliers up to it
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haha I JUST figured that out on my own this morning!!! I did it EXACTLY like you said, and yes, I noticed that you can't put it back in without twisting it back with the black keyhole tool.

I just sort of looked at it, thought about how it worked, and thought "well if I turn it left, it should put it back to decock...and it did!). You can decock it by hand, but definitely need the tool to put it back.

So do you think I need to do this for storage? or should I just leave it cocked? Does it do more damage either way?

THANKS ANYWAY :) If I had not discovered it, you just told me how, so cred goes to you!
 
Decocking and recocking all the time has more potential to wear the spring than leaving it cocked, though assuming it was designed properly neither should be a problem.

The only way leaving it cocked will cause damage is through creep. For spring steel, creep is only a concern at extremely high temperatures (hence my comment about storing in an oven)

Decocking and cocking all of the time could cause failure through fatigue (damaged caused by cyclic stresses). For spring steel again this is only a concern above a certain level of stress. If the spring and bolt were designed properly you should never achieve a level of stress through normal use where fatigue will become an issue, meaning you can cycle it an infinite number of times and not experience a fatigue failure. I would guess its probably fairly safe to assume it was designed properly.
 
BeerBaron said:
Decocking and recocking all the time has more potential to wear the spring than leaving it cocked, though assuming it was designed properly neither should be a problem.

The only way leaving it cocked will cause damage is through creep. For spring steel, creep is only a concern at extremely high temperatures (hence my comment about storing in an oven)

Decocking and cocking all of the time could cause failure through fatigue (damaged caused by cyclic stresses). For spring steel again this is only a concern above a certain level of stress. If the spring and bolt were designed properly you should never achieve a level of stress through normal use where fatigue will become an issue, meaning you can cycle it an infinite number of times and not experience a fatigue failure. I would guess its probably fairly safe to assume it was designed properly.
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I am going to go ahead and assume, that the TRG-42 was designed properly, and designed for longterm wear...hence the cromo barrel, and adoption by the finnish armed force...and other task forces in Europe...Mine has only been fired a few times, so I am assuming it should be fine :)
 
Leaving a bolt in the cocked position will have an effect over time. Best to decock it or in other words leave the bolt in the gun in a fired position. Most springs should be replaced every five years or so, it does matter! Pay attention to this and they will last longer.
 
Ian Robertson said:
Leaving a bolt in the cocked position will have an effect over time. Best to decock it or in other words leave the bolt in the gun in a fired position. Most springs should be replaced every five years or so, it does matter! Pay attention to this and they will last longer.
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Aha! So I am not being paranoid. I am right to be concerned that over time, things wear. If I am not using it, I am leaving it decocked :)
 
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