Do you have these in stock? What is the eye relief on the scopes? The eye piece on these look really small. Do you have to strain the eyes on these to aquire the target? Is that a glass piece at the end of the rear eyesight? How good do these sell and what is your personal opinon. I am looking for a trijicon sight that has the dot in it rather than the recticle. Those batteries always die at the wrong time.