I've been looking at these and I love the look and slim overall diameter, but can't find any info on compatible mounting systems.  It comes with one 1.5" rail section, but I can't find any sellers offering additional ones.  I'm thinking I'd probably want 2, maybe 3 since there's no other compatible accessories / mounts other than what I can mount to the top rail.  Would love some feedback if you've used this or seen one in person.  

Topic Moved

Every time I see a proprietary mount system hit the market these days I just ask myself, "self, why didn't thy just put M-Lok or Keymod stots in it?"

Point made, but then wouldn't you agree that almost everyone's M-Lok rails look nearly identical?  What's to differentiate one manufacturer from another?  I was an early user of Geissele's original rail designs (which were completely proprietary), and over time I'm pretty sure they sold every rail they could build.  Just my thoughts.  

For me, this would go on what's basically an "extra" rifle.  My primary "SHTF" is a DD MK18 clone SBR with quad rails.  

To a certain extent, perhaps a little bit.

But that, in my humble opinion, is not as important as being able to adapt to the largest possible array of parts and accessories without vendor lock-in.