Due to the $300 rebate and a good price, I just purchased a new Sig556.
Now that I'm getting to fondle it some, I really like the design. It's very interesting how the recoil spring pulls the bolt carrier forward instead of pushing it like AR's and AK's do. Unfortunately, the owners manual is lacking. The paper quality is good, but it was obviously written for a different stocked and sighted version than I have. Because of this I have some questions that I'm hoping you can help me with.
1) How do I install the buttstock extension? I see what looks like a screw in the buttstock with an extra wide slot that would hold it in place, but I don't want to assume anything. Why in the world is the screw slot so wide and what should I turn it with?
2) I think that I'm obviously missing something because the front sight post is right in the way of the red dot. The owners manual says that the front sight post should fold down, but it doesn't. My front sight post is fixed with a hood over it. How is this suppose to work?
3) Where on the rail is the best place to mount the red dot?
4) Are there any other setup things that I should ask/know?

Now that I'm getting to fondle it some, I really like the design. It's very interesting how the recoil spring pulls the bolt carrier forward instead of pushing it like AR's and AK's do. Unfortunately, the owners manual is lacking. The paper quality is good, but it was obviously written for a different stocked and sighted version than I have. Because of this I have some questions that I'm hoping you can help me with.
1) How do I install the buttstock extension? I see what looks like a screw in the buttstock with an extra wide slot that would hold it in place, but I don't want to assume anything. Why in the world is the screw slot so wide and what should I turn it with?
2) I think that I'm obviously missing something because the front sight post is right in the way of the red dot. The owners manual says that the front sight post should fold down, but it doesn't. My front sight post is fixed with a hood over it. How is this suppose to work?
3) Where on the rail is the best place to mount the red dot?
4) Are there any other setup things that I should ask/know?