SD Look- which rail?

Would like to build an “SD look” type platform with my 9mm sbr- I’ve heard both YHM and DD make rails that work best for this- what is there inner diameter? Is MI an option or any other options out there? Do all YHM free floats work or just certain ones?

I used the Daniel Defense, and my Trident just sneaks inside.

The YHM will work, but it’s round and has far more space than is necessary for the look.

This is pretty much my exact upper:

Henry @ Title II Arms knows his stuff.

Do you know the diameter of your DD rail?

No, I don’t offhand. Sorry.

The Trident 9 suppressor is 1.3" O.D. so the rail I.D. is a little bit more than that…it’s a fairly close fit