AR Gas Port Lengths Chart - good for us Noobs

[Aniest]

I was searching for something else and found this huge picture showing:

1. How to measure a gas port length
AND
2. What the measurements for lengths are according to Adams Arms

I thought I'd post here as info for any new shooters to the AR platform.

WARNING : it is 3350x2550 large zoomed in.

http://www.elitetacticalcomponents.com/media/upload/image/adams_arms_convkit_gaslength1(2).jpg

 

[tiriaq]

The title of the drawing refers to piston length. Maybe that is a typo.
It shows the lengths from the face of the barrel extension to the shoulder against which the gas block is fitted.