Nothing wrong buying a complete radical firearms rifle for $550. Has everything you need, sometimes they run specials and you get em for $499. Wont really save much money building one. Has a good free float rail and quality components from the factory. Plus if you ever sell it, most people are quicker to buy a factory rifle than a home build. Dont get me wrong, i enjoy building them but for your first, a radical firearms or hardened arms would serve you very well and is built very well and really close in price to building your own.