I think it's safe to say that everybody knows who shot 2Pac...the cops in Vegas were just too stupid to follow through with it.
When somebody gets his ass beat, then the person that beat his ass gets shot shortly after...then they find a 40 cal. glock in that man's house later...I don't think it can be dismissed as just a "coincidence". Not to mention, dudes name popped up SEVERAL times from people in Compton that heard about it.
We'll never have that official "closure", but if it looks like a fish, smells like a fish, and swims like a fish...it's a fuckin' fish.