I found an Aimpoint CompM4 for sale for $250, but the pictures are vague and I am having a real hard time telling if it's real or a fake. These generally go for $600+, so I want to take this deal if it's legit. I'm really hesitant because of the price. The seller says: "Aimpoint CompM4 Red Dot Sight. Used but factory refurbished. This is a REAL Aimpoint red dot made in Sweden, not a knock-off.. Comes with a AA battery. Has some of the black worn off on the QRP2 knob and on the dot switch. There are also a few scuffs around the eyepiece and one on the front element, which can be seen in the photos." Here are the pics: Please help!