I'm curious to know how the LaRue mount would hold up on a non spec rail? My concern is the recoil lug won't be seated against much due to the center channel cut for the iron sights. I have an aftermarket rail on my M4 that appears to be a little better than the factory one. Here is a photo of the factory rail, and the aftermarket Sidearmor rail.
Factory rail: Top
We have some concerns that it'll end up looking like this:
Is this caused by a seriously out of spec rail, or was the optic not properly tightened? Or both.
The short mount is recommended for shotguns on the LT website, with a picture of a Benelli M4 as an example. In your picture below, that looks like the optic wasn't tightened enough. It should be tightened to where it's tough to put on and take off.
Even a pot holiday beats the shit out of Kwanzaa: Another_Dude