This magnifier has a 3x magnification and offers a wide field of view. 
The Quick Detach mount has a "Flip-to-side" design that can be set up to flip to the left or right side of the gun. 

Holosun HM3X works with most reddots on the market and comes with a riser that allows it to achieve lower third or full co-witness.
It has an adjustable diopter switch (+3 down to -3) for the desired focus, an extremely clear lens and a very generous eye relief.

• Flip-to-Side function
• Compatible with Absolute and Lower 1/3 cowitness
• QD Mount and Spacer Included
• IP67 Certified
• Material: Aluminium