Great 1/3 co-witness riser - Holosun HS510C Riser

Overall, its a great riser that I use for my duty rifle which takes an occassional toss/impact. I didn't need the riser until I broke my backup magpul sights and upgraded to some fixed Daniel Defense iron sights, which cluttered my area of view in my optic. Target identification is something I have to be on my game with and adding this riser really freed up some much needed area of view. The cost seems a bit to high, but the item works great and so far, no damage.