High rate of fire, high stability, increased range when aiming, and a large magazine. I loved using my Shingen, but I will admit it seemed too cheap. Holding point A on Venus I took out three guardians coming through the cave without needing to reload. Just crouching and getting head shots. Yeah, it was fun, but it did seem like that rifle was just too good. Also, my bigger concern, was that in trying out other primary weapons, there was almost no incentive to use anything else. All weapons should have a risk/reward factor, and I just didn't see any drawbacks when using the auto rifle. I feel like stability needs to be really low on the autos to make them more fair and realistic.