My local gun dealer is going to give me a deal on one of the three that I decide? An Core 15 a4 Scout with 3 mags, S&W MP15 sport or a Bushmaster Carbon 15! I have never shot an AR style gun my budget is pretty low and Iam going off what the dealer is telling me... Iam trading in a gun and he is giving me the choice of the three for the same price... I know that the S&W sport doesn't have the dust cover and foward assist but the quality looks good... The dealer is telling me that the Core 15 is the best deal and quality.... What do you think?