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Author Topic: Rifling of grenade launcher  (Read 11324 times)

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Offline afss

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Rifling of grenade launcher
« on: February 05, 2012, 02:11:43 AM »
Hello all,

I am looking for information about the rifling of the 40 mm M203 grenade launcher.
The data I need includes:
- Manufacturer.
- No of lands & grooves.
- Twist direction (right/left).
- Min-Max width of lands/grooves.
I know it is not a small firearm, but if you have clearence to one and you can make the measurments. I would be most graitfull.
Lior
Talk softly and cary a big gun!

Offline Stojan Kostic

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Re: Rifling of grenade launcher
« Reply #1 on: February 05, 2012, 01:16:07 PM »
Hi Lior,

Using this link  http://www.globalsecurity.org/military/library/policy/army/fm/3-22-31/chap3.htm#3-2  you will find some of requested data

Cheers,

Stojan

Offline afss

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Re: Rifling of grenade launcher
« Reply #2 on: February 06, 2012, 02:30:08 AM »
Hi Stojan,

The most important information is missing, the width of lands & grooves.
It is not shown in any technical paper. The only way to get it is to measure them in the weapon itself.
Talk softly and cary a big gun!

Offline William Cox

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Re: Rifling of grenade launcher
« Reply #3 on: February 06, 2012, 03:28:20 PM »
Measured from the barrel mouth

6R
L ~.165"
G ~.685"

Offline afss

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Re: Rifling of grenade launcher
« Reply #4 on: February 08, 2012, 01:58:51 AM »
Thank you Will,

It is most helpfull.

Lior
Talk softly and cary a big gun!

Offline afss

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Re: Rifling of grenade launcher
« Reply #5 on: February 24, 2012, 07:16:27 AM »
Finally, I got hold of two launchers.
The lands width range is 3.9-4.2 mm.
Similar to the measures done by william.
Thank you.
Talk softly and cary a big gun!

Offline William Cox

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Re: Rifling of grenade launcher
« Reply #6 on: February 24, 2012, 08:20:25 AM »
Were you able to get the manufacturer and the other data you were looking for?

Offline afss

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Re: Rifling of grenade launcher
« Reply #7 on: February 24, 2012, 09:17:59 AM »
These are American made M203 launchers.
I was not aloud to take details as they belong to the military.
Talk softly and cary a big gun!

 

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