I have an AR57 upper that is the same size as yours except my lower is registered as an SBR. It is one of the most fun AR variants I have. For us left handers it is perfect suppressed as any gas blow-back you get from the suppressor just goes out the bottom of the mag well. I am 100% sure you will have much fun with yours.
ETA: I will forgo any pictures of mine so I don't step on your thread.