Excellent quality - Vortex StrikeFire II 1x30mm 4 MOA Reflex Red Dot Sight

I recently purchased this unit from OP.com. This was the first time I am trying a dot on an AR so it was interesting to see how this worked. The unit arrived on time, no issues, well packed. Mounting was straight forward, the mount is secure and perfect height to put the dot just over the front fixed sight, the unit can be mounted far enough forward to be out of the way not, yet still have a clear view. I laser bore sighted and made minor adjustments.
Went to the range this weekend to give this a try. Clear field of view and dot was clearly visible on a sunny day. Took me about 20 rounds to get used to it but right off the bat I was easily on a paper plate at 50 yards, a few adjustments and a few more rounds I was dead nuts center. Hitting metal silhouettes at 75 and then 150 by round 50. I put about 150 rounds through, still on target, no movement. My standard fixed sights are still usable if needed with the rear flipping down and out of the way, very nice. The covers are solid and out of the way, no issues.
One suggestion, take the manual with you the first time, I did not and spend a few pushes to remember what was on and off, my fault, still learning the unit.
For close range shooting for me, within 150 yards, I recommend this unit.