Even when you take the jamming rate into account, you can easily burn through 210 rounds of UAC ammo in the course of a match. With LLas mounted on the arms, you are also fairly well protected against lights.
Just picked up a few orions in the last cbill mech sale and I was struggling to make this one different than the other 3 I own. Seems like you have to use the 2 ballistics which leads you to your primary being uac5 or ac5. I went with ac5, but otherwise pretty similar build.
