I have an AR/Dark sentinel I've been playing from time to time. She's fairly fun and I like the concept, but I feel like I could squeeze a bit more effectiveness from her. She's currently level 47. Here's the build I'm roughly following, if people have any suggestions or additions (or, preferably, a fresh build!) I'd be super happy.
Sentinel_-_Assault_Rifle_-_Dark_Armor_-_Dark_Mastery_-_i26 (1).mxd