This seems to be sort of the standard when it comes to folding AR BUIS. I liked my DD fixed, but wanted to mount a scope so I had to go with a folding sight. Checked out other alternatives, but none seemed better than the Troy. Now that it is on my rifle, I have no regrets.
Pros: Reasonably priced, stout, easy to use
Cons: None yet
This review was written in the old system and had content requirements that are different than reviews written today.