What's the difference in rail height between standard and HK 416?

AR/M4 AR Technical Discussion
1

I know I’ve seen the dimension somewhere but now cannot find it.

Thanks.

2

possibly you can infer it from the difference b/t the heights of standard AR sights and HK416 sights. I’m assuming below these are sights designed for the HK416
http://www.hkparts.net/shop/pc/viewPrd.asp?idproduct=1306&idcategory=60

0.27 Inches lower profile than standard Troy Folding Sights