Okay so I have been reading about AR's and am now looking to buy. Price is a major factor and am seriously considering buying the STAG Arms model 1 A3 16 in. I am trying to figure out the differnce between the Stag Arms AR15 Model 1 and the Model 2?? As far as I can tell it is only the sights?? Am I correct on this. It also looks like the Model 1 comes with a detahable carry handle and a flat to rail that would allow me to take off the carry handle and put on some optics if I wanted very easily? Am I correct about this?? Anyone have any opinions about the Stag Arms AR 15 Model 1?? I ave read some about the Model 2 and they have been good.