Hi NitroX,

Yes, the peep sight doesn't change the setting once adjusted. As far as I know, this NECG sight is made by Recknagel.
But, as I said before, I am in the process to put the Redfield little peep sight attached to the rear face of the rear base. It is a permanent one, folding and unobtrusive, and also with some vertical and windage regulation.

This is the picture of the Redfield peep sight.