Oh yeah, and for you, for the time being, an A2 is just fine.
100 yards is not very far as regards your vision, and unless you have a lot of experience with iron shooting, it would do you good to stay with an A2 for a season or two. In position shooting, a magnified optic showing you everywhere the crosshair is moving is not always a positive, especially for less mature shooters.
As you get started putting things together (if you do), make sure to ask around...a lot of us have parts piles of great gear sitting around doing nothing, simply because AR parts need birth control.
100 yards is not very far as regards your vision, and unless you have a lot of experience with iron shooting, it would do you good to stay with an A2 for a season or two. In position shooting, a magnified optic showing you everywhere the crosshair is moving is not always a positive, especially for less mature shooters.
As you get started putting things together (if you do), make sure to ask around...a lot of us have parts piles of great gear sitting around doing nothing, simply because AR parts need birth control.