Holosun protective cover - OpticGard Scope Cover for Holosun 510C

I gave this 5 stars because of its purpose as in protection of my Holosun 510 red dot. At the time of my order I didn’t know it was ment to be put on and left in place while in use. I was after a cover to put on and take off. This cover I guess could be used as such ( on in storage off in use) except it fits very tightly once it’s on and getting it off is a bit difficult. The added plastic lense cover piece once in place wouldn’t allow use of red dot unless you removed the whole cover completely. Not what I was after.