Some quick questions...

[Ronin13]

So my brother finally got his Noveske SBR and had ordered a new trigger- Geissele Super Dynamic- and this was, in fact, the 4th time ever in my life I've taken down a lower receiver (never fully taken my POF down, and I'll get to that). Now the question is, does anyone know what kind of trigger comes standard in a Noveske rifle? Bro wants to maybe sell his and we aren't 100% sure what brand/model it is and how much to ask. Now, my other question, and I am curious to know if this is how it is on other rifles, my POF AR doesn't have the usual hammer and trigger pins- instead there's this what looks to be an allen key and a pin block. Is this an allen key (I don't have one that small anyway)? Luckily I already have a Geissele SSA Combat trigger in it, so unless I want to give it a really deep cleaning, I wouldn't need to take the hammer/trigger out.
Here is a pic (don't have the rifle with me at work so I pulled this one off of google):
If you notice just above the trigger is what I'm talking about.