Fixed Rear sight Vs. Fold Down Rear sight with RDS

[ghostman1960]

Someone got me a non folding DD rear sight today. From what I understand they will not work with a RDS. They will fit, but I still need a folding sight when running a RDS correct?

[Whootsinator]

Incorrect.

[ghostman1960]

Incorrect.

So its ok to use the DD rear then? The only drawback I see is having to look through the sights when using the RDS.

[Whootsinator]

Yes, it is OK. You can use an absolute or lower-1/3 cowitness. Absolute means you'd have to look through the rear aperture as if you didn't even have an RDS. A lower-1/3, the dot would be above the irons and you could use the two independently.

[ghostman1960]

Yes, it is OK. You can use an absolute or lower-1/3 cowitness. Absolute means you'd have to look through the rear aperture as if you didn't even have an RDS. A lower-1/3, the dot would be above the irons and you could use the two independently.

Thank you! That was the info I was looking for.

[luckyguy1]

also it depends on which RDS you are using (somewhat)

a Micro and it can be a bit tougher, but on a larger aimpoint or EOTECH I find I can still hover the red dot over the deployed BUIS by lifting my cheek just a little off the stock.

YMMV

[lethal dose]

What optic/mount are you running?

[kwelz]

I use an Aimpoint Micro with a Fixed front and rear. No problems at all. You don't even notice the BUIS unless you need them.

[lebowski]

Yes, it is OK. You can use an absolute or lower-1/3 cowitness. Absolute means you'd have to look through the rear aperture as if you didn't even have an RDS. A lower-1/3, the dot would be above the irons and you could use the two independently.

I use a lower 1/3 cowitness, but I believe even with absolute you still look over the rear aperture.

[Joeywhat]

I use fixed front/rear sights with a 1/3 CW with zero issues. Just look over the rear sight while using the dot...or don't...dot is still there while looking through the irons.

[citizensoldier16]

I have a fixed FSB and a folding Troy rear sight coupled with my Eotech 512 and have no problems. When I use the RDS the dot seems to float free over the front sight. When I deploy the irons, my dot sits right on top of my front sight post.

[variablebinary]

If it bugs you, sell the rear sight and get something that folds.

I've used both, and have grown to prefer folding rear sights, irrespective of co-witness type

[rob_s]

I'm another fixed-for-1/3, folding-for-absolute. However, with the H-1 I find the 1/3 visible but just barely and am considering going to an absolute mount and folding rear. I wish Daniel Defense would make an absolute mount as I really like the simplicity of their 1/3 mount.

[vicious_cb]

Or aimpoint can just get rid of that annoying diode location on the bottom right of the T-1/H-1 ;)