Rear sight in front of optic (rifle)

I figured I'd ask around.  I drug out the old TA01 ACOG last night and slapped on 20" barreled AR just for old time's sake.  And of course, the short eye relief required me to alter my cheek position.  So I removed the folding rear sight, put the ACOG on as far to the rear as possible, and then re-installed the rear sight to a position just in front of the ACOG. 

Unless I wanted to put it even further to the front, I mounted it backwards so it folds forward.  It makes the peep perceptually smaller, but not as much as the small aperature.  Just not a ghost ring any longer.  Eye position on the ACOG is now acceptable.  So the question is, is there an actual detriment to this?  I know the Canadians commonly mounted a BUIS in front of their ELCAN optics.  Rear sight position seems to be a personal preference when it comes to an RDS on a pistol.  Thoughts?

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Mark

Swear allegiance to the flag Whatever flag they offer

Never hint at what you really feel

Teach the children quietly For some day sons and daughters

Will rise up and fight while we stood still

 

Joined:  2/24/2003                          Location:  Nevada, USA

Original Post

Same problem often presents itself when using LVPO/ red dot w magnifier. Best answer would be backup sighting system at 45 (lots of options for irons, or RDS if you chose so).

If you absolutely must use top rail and ACOG (not really QD as far as I know) I wouldn't worry about it. ACOG is quite reliable system, and the chance of needing the irons (after removing said ACOG) they will work. You'll have slightly harder time acquiring sight picture and shorter sight radius...

I'd much rather sacrifice little of back-up system efectiveness over being able to properly use PRIMARY sighting system.

 "Anatomy and Physiology is EVERYTHING. It is the difference between being a trained monkey and a medic"

-RESQDOC-

theJanitor posted:

Don't have any insight on irons placement on the rifle, but no one is using a magnified RDS on a pistol

LaRue QD mount.  So the rear sight remains folded unless the ACOG is removed.

-------------------------

Mark

Swear allegiance to the flag Whatever flag they offer

Never hint at what you really feel

Teach the children quietly For some day sons and daughters

Will rise up and fight while we stood still

 

Joined:  2/24/2003                          Location:  Nevada, USA

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