The NECG ghost ring is a newer variation - and welcome. Those of us who tried to use the original with larger apertures discovered the problem with the hole with flats!
Last edited by Klikitarik; 12/20/14.
Sometimes, the air you 'let in'matters less than the air you 'let out'.
![[Linked Image]](http://www.hunt101.com/data/552/6772aperture.jpg)
