if that's your main..don't..
if that's your cheaply bought crap, sure..if you don't care if you can't get it working again..
I myself bought a broken gun to work on..and fixed it to work again..
I myself found M4 is easily to learn as a first gun because of all the resources..almost EVERY m4 has a tutorial somewhere...ak styles maybe not..
internally they are the same...but again, I watched hours and hours of gun tech videos and tutorials and then practice on my broken m4 that I don't care if it doesn't work..