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AR15.COM
3/29/2012 8:04:17 AM EDT
Hi all,
I've got a Vortex Razor HD 5-20x that is going to be going on my 7.62 OBR when it gets here.

Just wondering which LT mount I should go with. Was thinking the LT111 since it has 0 cant and is supposed to allow perfect alignment with clip on NV (planning on getting a TNVC Mini WASP after they are released) but it only comes in 30 & 34mm rings and I need 35mm.

Considering the need for 35mm rings and alignment with a clip on, I was looking at the LT104 and LT139 both of which say they have a centerline of 1.5" which is pretty close to the LT111's 1.535". First, do these mounts have any cant built into them? I didn't see any cant amount listed and I don't want to get one of them and then end up with too much cant in my setup. Second, I saw that the LT139 is recommended for scopes requiring longer eye relief like the Trijicon AccuPoint. Looking at the AccuPoint 5-20x, it shows an eye relief of 3.8-4.1". My Razor has a listed eye relief of 3.9". Is the LT139 preferable over the LT104 for my scope?

Thanks!
3/29/2012 9:04:52 AM EDT
[#1]
Here is the cant info from the FAQ:

LT158: 10MOA
LT104: 0 MOA
LT135: 0 MOA
LT139: 0 MOA
LT123: 0 MOA

LT STOMP: 20MOA

LT107: 30MOA

The 139 provides longer eye relief when mounted on AR pattern rifles that only have a flat top upper.  Since the OBR has a continuous rail, the 139 shouldn't be necessary.  You can mount the 104 anywhere along the rail.
3/29/2012 9:50:24 AM EDT
[#2]
Awesome! That's exactly what I was looking for. LT104 it is!