Parts bin guns can be first rate if they're built right. A good FAL kit and a proper receiver are the first steps. Then just put her together right. Barrel timing is crucial, and then you just need to get the locking shoulder measured right and you're on your way; the rest is just RETARD easy. When built right, you'll have a 2.5 MOA rifle that handles better than any .308 battle rifle out there, and goes bang every time you pull the trigger (that last part is kinda handy).