Hey guys I'm just making this as a general thread to talk about different ways to reduce the noise on an airsoft gun. So post some tips and tricks here I'm very interested to learn people's methods of noise reduction. Alright, I will start out by posting a simple and well known one as an example, the pvc filled with foam suppresor. What you do for this one is take a pvc pipe and cut it to the desired length, and then spray paint it your color of choice(usually black). Then proceed to get any kind of foam and put it around on the edges of the mock suppresor, but make sure that you leave enough room for the bb to get through. Then wrap duct tape(or any other tape) around the flash hider of your gun until the pvc is tight around it, and then you are good. I made one of these tonight and I will do a little testing tommorow and give you guys the results. One question I do have is does anybody know a way to be able to fit some foam around an m4 gearbox? Because it seems like that would reduce a lot of noise but there doesn't seem to be enough space to be able to do that.