Question about M203 Shells

Erennert · May 6th, 2009, 20:46

Hey everyone, my question is how are they specifically set off inside the M203? Does the M203 have a pin that hits the back, and hits the "trigger" that release the gas? Or is it more complicated.

lemegacool · May 6th, 2009, 20:47

Quote:

Originally Posted by Erennert

M203 have a pin that hits the back, and hits the "trigger" that release the gas.

thats pretty much it

surebet · May 6th, 2009, 20:49

Quite simple, but hard to type out. A striking pin in the launcher moves the valve forward (which is held in place by a spring), allowing it to vent its gas. Ball bearing in the valve allow some pressure to be accumulated before letting go to make the movement more snappy.

Quite simple really, but you really need to hunt down a disassembly video on youtube for more info.

Erennert · May 6th, 2009, 20:49

Perfect, because im looking into making an M-79 for myself. Anyone know where to get a trigger assembly for cheap that will set off a shell?

surebet · May 6th, 2009, 20:52

Your finger basically...

You only need a few pounds of pressure, so anything poking it in the back will do.

I've set off 'nades closing my m203 to fast or simply dropping them or setting them on a table too rough.

Erennert · May 6th, 2009, 20:55

But that wont have a trigger

And i want it to actually fire when the trigger is pulled. Any ideas?

lemegacool · May 6th, 2009, 20:57

make yourself a trigger/pin assemly in some plastic or metal if you have the tools for it...

basically something like this

i'm thinking of doing a double barrel 40mm farmer shotgun, would be awesome!

Erennert · May 6th, 2009, 20:59

That's the problem, i dont know where to start. Anyone got a guide, or a video link to build your own? I just want something that when i pull the trigger, the pin slams the shell trigger. Even if i have to reset it by hand, not a big deal. Hopefully cheap too

Erennert · May 6th, 2009, 21:08

sorry for the bump, but lemega, you've got me interested. So basically just a pivoting pin, that if i pull hard enough it will set if off? Sounds ingenious.

lemegacool · May 6th, 2009, 21:11

as surebet said only a few pounds is required to set off a 40mm nade so with a pivoting pin like that, trigger pull should be more easy if you place the pivot at the right place... do some layouts on cardboards.

Erennert · May 6th, 2009, 21:11

And if it doesn't go off, just pull harder? :P

lemegacool · May 6th, 2009, 21:14

lol yes and add a small return spring *tappet plate spring* to the assembly so the trigger is always in the "to be pulled" state

Erennert · May 6th, 2009, 21:16

Please explain. If this is as easy as it sounds, and it works. Definitely props to you.

lemegacool · May 6th, 2009, 21:20

something like that...

Erennert · May 6th, 2009, 21:22

Oh ok, i see what you mean. Your a Genius! I think that may work!

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May 6th, 2009, 20:49	#3
surebet Vicious MSPaint Wizard Trader rating Join Date: Aug 2004 Location: Longueuil, Quebec	Quite simple, but hard to type out. A striking pin in the launcher moves the valve forward (which is held in place by a spring), allowing it to vent its gas. Ball bearing in the valve allow some pressure to be accumulated before letting go to make the movement more snappy. Quite simple really, but you really need to hunt down a disassembly video on youtube for more info. __________________ Annoyingly good with numbers Stop American Censorship

May 6th, 2009, 20:52	#5
surebet Vicious MSPaint Wizard Trader rating Join Date: Aug 2004 Location: Longueuil, Quebec	Your finger basically... You only need a few pounds of pressure, so anything poking it in the back will do. I've set off 'nades closing my m203 to fast or simply dropping them or setting them on a table too rough. __________________ Annoyingly good with numbers Stop American Censorship

May 6th, 2009, 20:57	#7
lemegacool Trader rating Join Date: Aug 2008 Location: notre dame des prairies /quebec	make yourself a trigger/pin assemly in some plastic or metal if you have the tools for it... basically something like this i'm thinking of doing a double barrel 40mm farmer shotgun, would be awesome! __________________ member of fire team NOM. my other regular forum: www.toyotanation.com / gen3,gen4 camry Last edited by lemegacool; May 6th, 2009 at 21:03..

May 6th, 2009, 21:11	#10
lemegacool Trader rating Join Date: Aug 2008 Location: notre dame des prairies /quebec	as surebet said only a few pounds is required to set off a 40mm nade so with a pivoting pin like that, trigger pull should be more easy if you place the pivot at the right place... do some layouts on cardboards. __________________ member of fire team NOM. my other regular forum: www.toyotanation.com / gen3,gen4 camry

May 6th, 2009, 21:14	#12
lemegacool Trader rating Join Date: Aug 2008 Location: notre dame des prairies /quebec	lol yes and add a small return spring tappet plate spring to the assembly so the trigger is always in the "to be pulled" state __________________ member of fire team NOM. my other regular forum: www.toyotanation.com / gen3,gen4 camry

May 6th, 2009, 21:20	#14
lemegacool Trader rating Join Date: Aug 2008 Location: notre dame des prairies /quebec	something like that... __________________ member of fire team NOM. my other regular forum: www.toyotanation.com / gen3,gen4 camry

Question about M203 Shells

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