Forum:Sentinel Assault Rifles

I tend to travel light with my Sentinels, so I usually just carry an Assault Rifle. Up until now, I've been using a Phaeston. A solid weapon, but even when upgraded to the max, it's starting to show its flaws when playing Gold-level matches on Multiplayer.

I've found the Mattock works well with certain Sentinel characters, but not with all. Can anybody recommend a suitable, automatic or fast-firing semi-automatic Assault Rifle for the likes of the Turian Sentinel?

Btw, sorry for the glut of posts today - a lot of questions popped into my mind when playing online last night.