Early generation Bushmaster Carbon-15. 

this is a solid rifle that represents an interesting part of firearms history.

this rifle has an elevated picatinny rail with a built in rear sight. What is unique about this, is the built in rear sight sits at the same height as a carry handle. This means that the front sight is a non F-marked sight post.

which means that at minimum, this rifle is worth the value in parts. 

it includes the open emitter red dot.

price is $450 OBO. I am open to trades.