RDS Co-Witness with Fixed Rear Sight

[aaron_c]

Hey guys, this is mostly out of curiosity- those of you that cowitness a red dot sight with a fixed rear sight, do you not feel like the rear sight gets in your way? I'm wondering because I may, at some point, decide to spring for a red dot and with that in mind maybe I should get a folding rear sight- but I'd really not have that failure point if a fixed one isn't really in the way, as well as the added cost of flip-up units.

[TehLlama]

Depends on the cowitness type (Absolute, lower 1/3), as well as the tube diameter (the larger 30mm Aimpoints, Aimpoint micros, or EOtechs)

With the smaller aimpoint micros, using absolute, I find the rear sights being fixed does get in the way, while in lower 1/3, they don't.
With larger optics, it doesn't seem to matter as much (my M4S AP), but I find myself preferring to run Aimpoints with fixed front and folding rear sights anyway (absolute cowitness, I can still use the aimpoint tube as a caveman rear sight for when I forget to turn on the optic)

[TriumphRat675]

Not really. I have an M4s with a lower 1/3 co-witness and a Troy folding sight that I never fold down. I hardly notice it. With a smaller optic it may be more noticeable but I can't speak to that.

I've never heard of a Troy breaking, so the strength concern probably isn't anything to worry about. IMO the folding sights are more versatile and can be used with more types of optics, and that justifies the extra cost.

[Belmont31R]

An RDS should be used independent of the irons. Theres no need for them to line up.



A fold down BUIS is the way to go IMO.

[aaron_c]

Originally Posted by TriumphRat675

Not really. I have an M4s with a lower 1/3 co-witness and a Troy folding sight that I never fold down. I hardly notice it. With a smaller optic it may be more noticeable but I can't speak to that.

I've never heard of a Troy breaking, so the strength concern probably isn't anything to worry about. IMO the folding sights are more versatile and can be used with more types of optics, and that justifies the extra cost.

I'm not totally sure if I'll be able to afford the Troy as opposed to, say, an MBUS rear sight yet. Depends on what my funds look like after getting the BCG, charging handle, and front handguard for the BCM upper I hope to get. I worry a bit about the MBUS's ability to take a hit, though I must admit it's 100% because of my perception that polymer is weaker than metal sights. That's what had me considering the less expensive fixed metal rear sight.

[Thomas M-4]

Originally Posted by aaron_c

Hey guys, this is mostly out of curiosity- those of you that cowitness a red dot sight with a fixed rear sight, do you not feel like the rear sight gets in your way? I'm wondering because I may, at some point, decide to spring for a red dot and with that in mind maybe I should get a folding rear sight- but I'd really not have that failure point if a fixed one isn't really in the way, as well as the added cost of flip-up units.

If you use a lower 1/3 cowitness then NO the rear sight is not in the field of view of the RDS. I started out with a folding rear sight but have since then gone to a fixed rear sight "Larue ". After trying both I wouldn't use a folding BUIS unless I needed the clearance for a magnified optic.
The main benefit of is that I always have sights Instantly. Batt can go dead , optics can go tits up but that is a Low % accurance the main reason for me is if the dot gets washed out which happens a-lot or you forget to turn the thing on. Both of which will happen more than a good RDS optic going out.

[Thomas M-4]

Originally Posted by aaron_c

I'm not totally sure if I'll be able to afford the Troy as opposed to, say, an MBUS rear sight yet. Depends on what my funds look like after getting the BCG, charging handle, and front handguard for the BCM upper I hope to get. I worry a bit about the MBUS's ability to take a hit, though I must admit it's 100% because of my perception that polymer is weaker than metal sights. That's what had me considering the less expensive fixed metal rear sight.

$65 will get you a Daniel Defense fixed BUIS.
http://www.skdtac.com/Daniel_Defense..._p/ddf.115.htm