PUBLIC Forums => Public Forums => Call For Assistance Feedback => Topic started by: afss on February 05, 2012, 02:11:43 AM
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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
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Hi Lior,
Using this link http://www.globalsecurity.org/military/library/policy/army/fm/3-22-31/chap3.htm#3-2 (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
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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.
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Measured from the barrel mouth
6R
L ~.165"
G ~.685"
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Thank you Will,
It is most helpfull.
Lior
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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.
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Were you able to get the manufacturer and the other data you were looking for?
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These are American made M203 launchers.
I was not aloud to take details as they belong to the military.