Great enhancement for my vortex red dot sight - Vortex VMX-3T Magnifier with Flip Mount

This thing is well made and works very well with the Vortex Sparc II Red dot sight I installed on my 300 Blackout Rifle. The optics are bright, clear and distortion free. It is very easy to install but take your time so you can determine the best position for your individual eye relief. The flip mechanism is easy to use and is of sturdy construction. Adjustments to center the objective lens on the red dot are easy and take very little time. For the money this is a great investment that makes your red dot site even more effective with out adding a lot of extra weight.