Originally Posted by oneyeopn

Just a quick thought. When a piece of equipment needs a seal to keep dust and dirt out what do you see? You will find usually a cover or such that is bolted down with an o-ring or some kind of seal. For those of you who really really believe the dust cover is a requirement. Take your AR with a DustCover, remove the upper, take the BCG out and shine a flashlight into the inside of the DustCover. Look at how much light leaks through. Remember how small dust particles are? You dont think that the Dust Particles come through all that gap. Just another bandaid. Food for thought, Stay thirsty my friends. (just had to add that sorry)