I'm trying to come up with answers for but falling short. I'm looking for this charging handle that will work with the kwa GBBR. http://www.parabellumarmament.com/pasitev2/ambi.htm The ADO one. I can't find info that says if it could possibly work or a way to make it work. It's unique and I like the idea. If not are there any other unique charging handle that will work with the lm4?