Well it finally happened to me! I lost the lens covers off the trs on Monday. I am usually real careful about where I put them so I don't loose them, but they somehow fell out of my pocket. Anyways, I found a great substitute for them. Scope Coat makes a cover for the Aimpoint micro, and from what I have read it's a perfect fit for the trs-25. So I am going to get one ordered and try it out. I guess they come in a couple colors also. Never liked how the stock lens covers fit anyways, as they never liked to seat fully, hanging up on the weaver rail. So if anyone is looking for an alternative to the stock covers, you might want to check these out. I will do an update when I get mine in!