I just wanted to post this in case anyone didn't know about the Ultradot Rebuild Kit. I purchased my first Ultradot in 2005 and just became aware of it. Over time the
O-rings will deteriorate and fall apart. Some others may lose parts such as the battery cover or adjustment screw covers. If you go to the Ultradot Website they offer a rebuild kit for about $13.00. This is a great deal and of minimal cost to keep that bad boy you up to snuff. I bought one today as I know my Battery cover is scarred. After ordering it I inspected mine and saw the the O-rings were falling apart. Good shooting