I am a riffle newbie and dont know where to start!I have some ideas about what im wanting in a riffle,but dont know of any brands that fit my needs.What I want in a riffle:223 caliber,prefer carbine type riffles,must be a model in which high cap magazines where made for it anywhere from 15 to 30 rounds,the use of polymer in its design would be great,BLACK,light triger pull,and of course availability of parts is always good.Is this gun a preban dream,or a very possible reality for me?