All of the parts and pieces are interchangable, so just build your own. It's not as hard as you might think. Read up on how to do it, then start by buying a stripped lower receiver. It's the only part that requires a FFL and once you have it, all the other parts can be bought online. It's not only cheaper to do it this way, but in the end you will wind up with a gun that is exactly what you want. My 18 year old son just finished building one, and I supervised every step. The one thing that surprised me was the fact that no supervision was needed, it was so simple that it makes you wonder why anyone would buy a complete rifle.