Then spend a bit more and get an Aimpoint C3. Seriously, the Vortex offering is fragile in comparison, has close range (sub-50yd) parallax issues and a mediocre battery life.
A new C3 can be had from places online for less than $400. If you look around a bit you can likely find a used one for an even better price. With the C3 you will have confidence in your sight, and you’ll know that on the small chance something does go wrong Aimpoint will take care of you.
I am one of the biggest Aimpoint fans out there. I absolutely love them for their rugged construction and insane battery life. I have both an ML2 and the new M4S. With that said, both have pretty substantial parallax at 50 feet. Aimpoint sights are not parallax free as advertised.
I really am quite surprised that people continue to spout the Aimpoint “parallax free” advertising line. Has anyone ever actually sat the optic down and looked at it from the rear, moving your head, while the optic lays flat on the table? Try it. You’ll quickly notice that at closer ranges there is quite a bit of parallax.
I should have clarified, what I called ‘parallax’, I should have properly called it parallax error, all optical devices suffer somewhat as does the human eye, but the Aimpoint itself has almost unmeasureable deviation.
Short version, Aimpoint’s system uses the two lenses to create a artificial stereopsis inside the device to minimize parallax error. The cheaper reddots don’t go to the extra expense (this is how it was explained to me anyhow).
If you shop around and are patient you can find a used Aimpoint at a good price. I picked up an Aimpoint ML2 used for $260 on Gunbroker.com in March. This included the aimpoint quik-disconnect mount. I guess everyone else over there
were focused on M3’s,M4’s,T1’s and H1’s.