I have the AGC and while I have not had any issues with debris getting in it, it is definitely not waterproof and will wet out in a good rain. I sprayed my old ACG with Camp Dry after having it get soaked on my last hunt. I haven't had it out in any rain since, but I did run water over it and it seems to bead up and run off without soaking in. I also had Jimmy Tarps make me a silnylon cover for it and it fits very well but I haven't had the opportunity to test it out in a good rain yet. I just saw on Ebay that Jimmy Tarps is making them out of the green cuben fiber now and selling for $30.