Irongladiator yes it's a Rubie's. I did watch his video, nice job he done especially in a day!
I had to take the whole thing to bits to fit the USB circuit board into the stock a route the cables. So I sanded/filled all the seams and holes when I was on. The scope is an real scope, so I had to slightly cut into the top to make it fit. Not sure it was worth it haha but I done it mostly to gain some experience.
Nice one, where did you pick that up from?