Does that front ironsight fold down or is that the reticle?
And not the reticle, all it'd be looking through the scope is a tiny little blur. Kinda like a scoped M14.
If you look closely the otptic is offset to the left side of the rifle and the iron sights are lined up directly on top.
It is one of those optical dillusions, like Toosky! lol
Like the AK scope mount rail. Makes sense, that top cover probably isn't a sturdy mounting site and a scope would impede the use of that charging handle.