AR dimensions help needed

[spyder]

Can anyone tell me the exact dimension between the center of the barrel, and the gas port on an AR 15? I don't have a normal upper to get the dimensions off of (I have a monolithic).

[Great-Kazoo]

Link 2 might be more of what you were looking for, IF you can read it.

http://www.shilen.com/ar15Barrels.html#ar15Contours

http://www.practicalmachinist.com/vb/gunsmithing/ar15-barrel-dimensions-barrel-extension-127672/index3.html

[ray1970]

Center of the barrel to the gas port?

Should be about 0.112" if its a 5.56/.223. [Coffee]

[spyder]

.783