Fortis lo pro gas block - Fortis Manufacturing Fortis Low Profile Gas Block

By far one the the best mods you can add to your build, this is the second Fortis gas block I own and because of its low profile size you are able to accommodate smaller hand guards on your rifle, and it looks great unlike the usual gas blocks that have no definitive shape this gas block from fortis is esthetically pleaseing to look at through your hand guard.