I want to get either the SPR or SPR-E mount from LaRue but could not find the specs for these. Specifically, I wanted to find out the amount of forward cant each mount gives, because I am not sure if the SPR will push the scope far enough forward.

Plus how high are the mounts? 1.4"? Is this the only height available? I have a 50mm objective on my scope and want to make sure the mount is sufficiently high.

I have the SPR on my RRA ET with a Burris 3.5-10x 50mm LRS and I'm good. Reeeeal good.

I think you get just a little distortion from the front sight (if you have one) if it's too close - so you don't want to go too far forward.

I have no prob getting to my charging handle

see my post in this thread:
ar15.com/forums/topic.html?b=3&f=18&t=253447

and more pics here:
ar15.com/forums/topic.html?b=3&f=12&t=231558

ar-jedi