Sight height on rail

[Uncle Alvah]

I have been shopping for an iron sight for my flattop.
The gun has a VLTOR free-float handguard installed.
Being that the sight would actually be on top of the VLTOR rail, which is on top of the receiver rail, do I need to consider the additional height of the rail to select a suitable sight that will not be too high?

[bkb0000]

you don't put it on top of the casv rail... you wouldn't find a sight that will zero like that wayway. just buy whatever sight you want, and put it on the receiver behind the rail.

[Uncle Alvah]

Maybe I'm just being stupid here, and if so I apologize, but there is no rail exposed in the rear?

Don't have the rifle in front of me, but I have an old pic from the shop where I bought it.

[ChicagoTex]

There's just enough room behind the rail for a BUIS. It's left there by VLTOR for exactly this reason.

Note: some BUISs may fit better than others.

[bkb0000]

you're gonna have to move your 'cog up a notch, but your iron will fit right there in the last slot. as the above poster said, they did that by design.

[Uncle Alvah]

I learn something everyday! Thank You!

[bkb0000]

that doesn't look like a very comfortable shooter.. gotta have a jaw-weld with the cog up that high, and it's way too far back to nose the charging handle.

[scar2099]

you put whichever buis on the rear that will be fit best on CASV preferable something like this so it doesnt interfere with your optics when you folded it down . (picture got it from google)

[Uncle Alvah]

that doesn't look like a very comfortable shooter

May not be......new gun to me....
Actually, the ACOG is not on the rifle at the moment, that pic is from when it was sitting in a local gunshop, note the BS trigger lock........I been working on getting that paint off and such. Great project, having lots of fun!