Recently ordered this from another site (Brownells) and I have to admit that it was worth every bit of it's admittedly higher price. The plastic feels of high quality and it seems like it can take a large amount of punishment. At first it is a bit awkward to use but you quickly get used to the new placement of your hands and is over all comfortable after a small bit of use. Word of warning if you have side rails, your hands will overlap the side rails on the dominant side so it is suggested you wear gloves/put rail covers to prevent hurting your hands. The Fore grip adds stability to your gun without any of the disadvantages of a vertical fore grip. Have used this one both a real steel AR-15 and an SCAR style air soft gun.
-Light, strong plastics
-Comfortable, more natural hand placement
-Better stability to gun
-Looks pretty good on gun
-will last a long time
-Difficult to install/uninstall (Have to line it up perfectly for screw to fit, difficult to tighten, unscrew)
-Takes time to adapt.
Rating: [4 of 5 Stars!]