This is a great drop in rail for your AR15/M4! It fits properly and remains tight on the rifle even after being used and abused. Optics planet is the only online site I trust to purchase all of my gear. They are fast, reliable and if you have any issues you can call them and they will handle it.
Pros: light weight, easy to install, and rugged
Cons: like everything else price
This review was written in the old system and had content requirements that are different than reviews written today.