You dont need any iron sight to zero your scope. You just shoot at a target, at say 70ft. Then adjust your red dot until you hit it when aiming.

The reason i said just aim below, is if your too picky to get a new mount, your stuck with that. Make it work for you.

You dont need any iron sights to sight your scope, but u need to align the reticle of your scope to the sights.

I can just purely use my red dot all the time. Fire my gun, and adjust the dot accordingly without using my sights at all. Yes i know this. But what i want to do is to be able to switch between my sights and my red dot whenever i want without zeroing my gun in between.

don't you realize that your mount is too high?

Buddy, if your rear sight is physically too low to see the sight picture of the red dot fully, then you can't co-witness the front sight.

It's like putting a wall between the rear sight and the front sight.

Yes, of course i know that. But I find it hard to believe that Larue Tactical cantilever and "L" mounts from both brands Bomber and Element are all the same height and all too high to mount an aimpoint on an M4 (i own both brands and i tried them all). So are you saying that all of these mounts, from both brands, are too high and cant be used for an aimpoint? why would both brands make the mounts so high and unuseable then? Does this make sense to you?

I may be just your Iron sights.

Yes, all of those mounts are too high. They are not designed to be co-witnessed with the kind of iron sights you have.

The cantilever design pushes your Aimpoint out over the D-ring. Leaving more room behind to mount your NV stuff or even the 3X Magnifier. The base has a built-in watertight storage compartment for an extra battery. That's why it's so high.

If you want to co-witness properly, then get an regular L-Mount.

I'll be damned...

Okay, so which irons sights are meant to cowitness with the Larue mounts?

Hey, so ive seen alot of pics of the MK18 MOD 0 and many have an aimpoint on a straight mount with a BUIS. Do ppl actually aim their gun by looking through the BUIS and red dot or is the BUIS only used incase the aimpoint runs out of battery as you guys mentioned? Thanks

You know BUIS stands for back-up iron sights, right? :p

Yeah, the co-witness method is just a convenient way to zero your sights. They should naturally be co-witnessed anyways after both are zeroed correctly, but it is possible to zero and use the red dot sight with no form of irons on whatsoever.

I'd say the vast majority of people that have BUIS on their rifle have them for looks only, and don't bother with them at all unless there's a critical failure of their electronic optics.

I use my Aimpoint only, and even replaced the front sight post with a flip-up to get a clear field of vision through the red dot; the flip up is always down, never used.

So in all the MK18 MOD 0 pics i see, no one really uses the BUIS right since everyone uses their aimpoint? Its just there for looks?

It's on personal preference.
BUIS is there when your optics fail.

You either focus your eyes or you don't.
BUIS also help on really sunny weathers, and when it gets too bright, your optics are not bright enough to show.

You get for what you paid for.
If you wanted high quality optics, buy a real one, or try even getting one into Canada.

If you want your sights and optics zero-d, go to a field.
Go to TTAC this week on Friday.
The range is open to shoot, and free, bring beers and food for the fun of it.

Will you be there? It will be my greatest honor to finally meet the HITMAN aka Shirley :)

yip it's your mount - it's just too high to allow your BUIS to be within the scope diameter.

I had to buy a higher mount for my SCAR to be able to co-witness the RDS and the BUIS...

http://farm3.static.flickr.com/2479/...2e7798b3_o.jpg

Dude....you're going to be sooooo disappointed.... (kidding ;))