I'm very happy with the Mark 4 HAMR. It's compact, light weight, well built, and has excellent clarity. Set up and sight in we're both simple, and accuracy is great. I also like the compact design of the DeltaPoint, and the protective frame. Overall, it's a very nice package. The two things I don't like are having to losen and tighten the tiny lock screws every time I make an adjustment, and the sensitivity of the adjustment screws. With high sensitivity and no distinct clicks, it's not easy to make fine adjustments. My workaround was sighting in with the HAMR, and then adjusting the DeltaPoint while keeping the HAMR on the target.
Pros: Light weight, great clarity, versatile, well built
Cons: DeltaPoint adjustment is not simple.
This review was written in the old system and had content requirements that are different than reviews written today.