Uhh... I love this, and it inspired me to draw my OC, but I realized something, when you look through a scope, you generally close the other eye so it's easier to look through.. I love it though! Proportions are gewd and all c:
Closing the other eye is actually something I was specifically taught not to do, despite how common it is. That said, that's something I was taught in Scouts as a kid; I make no claims to be a soldier or anything.
I'm no expert, but as I understand it, closing the other eye is for focusing and actually taking the shot. Both eyes should be open for maintaining situation awareness of the full area, rather than what's in your scope.
In case people were wondering, here is a little-known fact that Lauren Faust posted on her Twitter regarding hooves. Lauren Faust has stated that in Equestria, hooves are made from the same material that horns are, and thus conduct magic at a lesser degree (because the horn is close to the brain, this allows extensive magical-strength); thus allowing the manipulation of their environment through their hooves.
This truly is delightful, except for one error; the scope has to be a bit apart from the eye(eye relief), otherwise the rear lens will punch through the eyeball when the rifle is fired and recoils backwards.