I bought this rail to attach a tactical light under the barrel of my M1 carbine for home defense purposes. I was looking for something sturdy, black, lightweight with 1-3 picattiny slots. This fit the bill. You can see the completed project at: http://www.thehighroad.org/showthread.php?t=476747
Pros: Lightweight, inexpensive, practical
Cons: none
This review was written in the old system and had content requirements that are different than reviews written today.