Hey guys I am in the market for my first AR and was wondering what your opinions are on the Bushy Carbon 15? I was at the range today and a guy had one he had just bought. I shot it and it felt great, very light. Shot nice although he did say the Red Dot seem to get knocked off sight. I would more than likely replace the red dot so I am not worried about that. What about the poly lower? Would this thing hold up for long? I want to use it as a range gun and as a learning experience to get familiar with AR's. I was looking around the $700 mark. I was also wondering if an AK for $400 would be a good start. Any thoughts?