Your receivers look dry, like they are crying for an oil bath....if I were you I'd give that rifle some TLC with a silicon rag and/or some liberal doses of CLP. The parkerized finish drinks oil like gatorade and holds onto it...good rust inhibitor and protectant too.
It is a BEC Miradot. Has three reticles, dot, post, and crosshair. Can change brightness settings and switch between green and red. Was not sure I would like it but sighted in today and had no problems with it. I think it will stay on the rifle.
Powder Burns, your right it does need a silicone rag,Thats how it came out of the box two days ago. Field stripped it today lubed it internally but I need a new rag. Good excuse to stop back by the gun shop tomorrow!!!