AR buffer tube thread pitch.

[Tiwaz]

I have tried searching this out but I need some confirmation. I believe it to be 1 3/16" 16tpi but I'm not sure, if that's not right can someone tell me what is the thread pitch on a AR buffer tube? Also it is the same between mil-spec and commercial is it not?

Thanks

 

[Urban_Ops]

You are correct 1 3/16 x 16tpi
Commercial and milspec are the same thread, different diameter of the extension tube though.

 

[Tiwaz]

Thanks

 

[toya]

It is the same between mil-spec and commercial is it not?
Thanks

The threading is the same, only the tube diameter where the stock slides is different.