I used to own a 6-24x56 FFP Mil/Mil IOR and bought it when it first hit the market back in 2010 it was in the same area as the Razor Gen1 only cheaper. I have since upgraded to a Razor Gen2 4.5-27X56. It was a good scope at the time and was what I could afford. So, having been a former IOR owner, I will give my mini review:
Glass is good, no getting around that.
I personally loved the MP8 Christmas tree reticle which I got in a replacement scope(more on that later)
It tunnels below 10x magnification which makes lower than that pretty useless and it seemed to go through batteries even when turned off
Tracking seemed good. I had no issues with it.
It had a zero stop, but no way to lock the turrets. this made me uncomfortable when hunting.
I bought my scope from liberty optics when they still sold them, so I had good warranty service with them. My last time I had a warranty issue I dealt directly with IOR and that wasn't the same.
The first scope I got, I immediately sent back because the reticle was canted
The second scope died of natural causes
The third scope padded it's rifle's 3 ft decent onto concrete when some high winds caught it. The scope still held zero but lost focus after every shot, then several years later it took a 90degree fall when the blind it was in got taken down(not a very hard fall by any means). The reticle started turning when the magnification ring was turned. It was pronounced dead and $250 later I got my last IOR scope.
Decided I did not want to deal with the stress of a scope that had a sketchy warranty and couldn't take a beating, so I sold it for my current scope. The Razor Gen2 is amazing.
So I say all that to say this:
Pros:
Competitive when I first bought it
Good Glass
Good reticle
Makes you a maverick on this forum
Cons:
Fragile - handle with care
Odd sized tubes
Sketchy warranty
Poor/weak mechanical track record
IOR doesn't compete with the current offerings of other Optics makers
There is a reason it makes you a maverick on this forum
Would I recommend it to a friend? No
I can remember telling myself every time something went wrong: "I should have just spent the $200 extra and bought the Razor gen1."
There are much better ways to spend that kind of money.