I recently purchased a used, but like new Walther PPS M2 rmsc (the one that came milled from the factory). However, I am not the second owner of this gun, and the guy i bought it from said, when he bought it, the gun came without the red dot. As a result I have a pps m2 with 4 holes in the top of the slide. I emailed Walther, and they said they never made a slide cover. Does anyone know of any after market options? I haven't been able to find any, so i came here as a last resort. Any help is appreciated!