3 Round Burst Fire?

mmattockx

mmattockx

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Hopefully, this is the most appropriate forum for this question.

Does anyone have a drawing or details/explanation of how a 3 round burst trigger mechanism works? I can understand the typical semi-auto, where it resets after each shot and the typical full auto, where it doesn't reset until you release the trigger. What I would like to know is how the mechanism is set up to count rounds so that it shoots only the number desired for the burst.

And before everyone gets all twisted up thinking I am a troll or looking to build my own, this is strictly for my own curiosity. If wanted a full auto firearm, I would simply go down the street and buy one from the local gangsters.:eek::D

Thanks,
Mark
 
Wikipedia has a decent entry on it.. For some anyway, its a cam function that trips the trigger to fire 3 times in a row with some resetting if 3 rounds dont exit before releasing trigger, while others will fire only the remaining before stopping fire on the next trigger pull.
 
Big problem with 3-round bursts is that the mechanisms tend to be fragile.

That is about the LAST thing you want if your life depends on the rifle working.
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There are different systems for different firearms obviously.
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Multiple notches on round thingy here:

http://www.ar15.com/content/guides/function/burst/
 
On the AR its pretty much a dead system. One of the big draw back is that if you stop at round 2 next time you press the triger you will get only 1 shoot. Anyway its very easy to shoot single shoot in FA with an AR and equaly easy to shoot 3 round burst.
 
smellie said:
Big problem with 3-round bursts is that the mechanisms tend to be fragile.

That is about the LAST thing you want if your life depends on the rifle working.
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Click to expand...

Are you offering your statement as opinion or fact?

If it is your opinion, then you are as entitled to that as anybody else, and whether or not it has any basis in fact is immaterial.

But if you are saying it is fact, please back it up with documentation. In the British Army [and many other forces] we have been using three-round burst-fire H&K MP5/MP5K and MP5KS for the last thirty-something years. I don't recall any of the fragility that you claim to know about, but if we've been living in a fool's paradise with our guns about to disintegrate on us at any second, I think we should be told.

tac
 
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