[Defender968]

Ok I need a little help, I purchased an Eotech 517 (my first Eotech), and mounted it directly to my Mfourgery as well as to my Krebs Ktr-08, on both weapons the sight was way, and I mean way off, couldn't get it on the paper not even with maximum adjustment. I also noticed it had 2 center dots, one in the actual center and one slightly dimmer up and to the right of the center dot. I checked using both eyes both open and closed to make sure my eyes weren't playing tricks on me but it was there regardless.

So I sent the thing back to Eotech and I got the site back today with no guidance as to if they did anything to it. It appears to me that it is still way off when I mounted it back on the M4.

My question is this do you have to have an additional mount to make an Eotech work on an M4? It has an integral Picatinny rail mount just like the 557, I was under the impression you could mount it directly to the weapon without a Larue or other mount am I wrong here?