Last year my wife bought me a RRA .223 lower with the thought that I could put together just about any format I wanted. I am new to the AR -15 world. I have only shot one and I could use some advice.
I'm not sure what upper I want to get, (other than a CAR) I have the surefire hand guard and an Aimpoint scope sitting in the safe waiting but no top half of the rifle yet. RRA sent me the Christmas special email so now seems like a good time.
I have a couple of questions,
1. What is the difference between the CAR A4, Tactical CAR A4, and the CAR upper?
Is it just the hand guard and carry handle?
Sorry for the novice questions, I just don't know.