What x6 magnifier compatible reflex sights?

Couple weeks ago my cheapo 10-40x50 finally kaput, I would need some time to pile up a cash for a decent quality long range scope. I decided in mean time I will play with red dot.

Did some research on reviews and picked up a Vortex Sparc AR. Nice sharp dot, I like it.

Again in mean time ran into a trade deal here @ AGN with another fella, for Sig Juliet 6 magnifier. The lens arrived yesterday, I mount it, nice sharp glass. Turn on the red dot...and a shock.

The dot is not a dot but a small short line like this " \ " with a barely recognizable bigger dot in a middle. I rotate my Impact around the lens center and the line rotates with it. Called me son, he sad line and dot in the middle, called my other son...a line, today morning called friend of my...he sad a line again with maybe a dot in the middle.

Uhm. Sit in a car and drive to closest gun shop. They have a Sig Romeo 5, tried it even more awful thick line. Tried the Sig Romeo 5X-XDR, the circle is nice but the center dot is still like a fuzzy line. We test it with my Sig Juliet 6 with the store x4 and x6 lenses, one another lens, all magnifiers show a "\" line with a recognizable dot in the middle what is again debatable if I shall accept it.

So a good and a bad....my eyes are stil OK for a 60 yo. A bad, I need to figure this thing, worked so hard to put the set together.

Got home, lets make a picture, and dang, I got it.

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There is a LED Diode in 45 degree angle that projects a dot to the center of the lens, that is fine, but creates a thin "\" ghost line on a glass curvature as well. Not visible by naked eye at x1 power but the Sig x6 lens magnifies it. Now this is a picture I made with S9+ but you shall got it what I mean with "\"

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According to my wife :) (btw she is working in optics for bigger defence company), the better glass on Juliet6 is showing blemishes on coating how the light is "kissing" that sphere on Vortex glass (and/or the LED Diode material).

I like the Vortex Sparc AR as a stand alone unit but is going back to the store, that little red dot sight most likely not meant to combine with higher power magnifiers.

I am keeping the Sig x6 lens and going forward with it, looking now into some reflex scopes reviews.

Or shall I look for prism sights maybe? I don't really plan to spend a big money on it but I don't want to buy some low quality neither I would regret later for $$.

Edited: the OP description/question
 
The very first problem I saw with Vortex Sparc AR (made in millimeters) vs Sig Sauer Juliet6 (made in inches) is the mount/height difference.

37/40 mm vs 1.41/1.53/1.63".

No matter what combination I made with supplied spacers (from both units) the center height difference is between 0.044" to 0.078" offset in optical center.

These Holosun 507C/508C looks again low profile the specs says primarily use with pistols. Good thing I have the (about, never actually measure it) 1" elevated tactical rail on my FX Impact, also adjustable cheek rest.

Any offset is actually influencing the parallax, at a first.

I have one store, online listing the Holosun 510/512 in stock, Monday morning I may go give them a visit. But that would be a $500 canadian piece price, a pretty steep for a x1 red dot sight, will see, I need to sleep over to justify that expence.
 
My bad - I posted the wrong model - you are correct the 507 is the pistol one. The HS510C is the rifle version. I have a Vortex 3x magnifier and it works perfect with the 510C.

I can't speak to the Sig version unless it's not to spec, but the Vortex and the HS510 both mount up for center co-witness.

The HS510C should be able to be had in the $300-325 USD range. Not sure on the Can dollar conversion.
 
If you could mount the Holosun with Vortex most likely both units built in mm and they will be either 37-40 mm center height. That is perfect to be able to align them.

I don't want to "overkill" the red dot piece price, my goal is to save for some nice Euro long range glass, will take me couple months but hoping to get there eventually.

USD$ started sinking, couple months ago the exchange rate to CAD$ was about 1:1.5 last night I checked it was low to 1:1.3 and most likely will keep that trend.

EU to CAD$ is strong, unfortunately.

ie the Holosun 510 currently $475 CAD = $362 USD +15% Tax