If you're buying it to be "cool" like everyone else, go buy a cheap one like everyone else. You get what you pay for with AR15's as I've said about a billion times on here. I prefer the 1:7 twist 5.56 chambers, but that's just me. I bought my LMT for specific reasons, but I have a few S&W M&P15's aswell. Learn yourself on the AR15 before you hit the range. As simple as they seem, there's a few tricks to them aswell. Another thing I'll repeat, properly lube the rifle, buy quality magazines and spend for good ammo.