I was thinking about doing a mod to my mav and came up with this more than likely unoriginal idea. If the pressure chamber is connected to a straw, would there be any foreseeable problems in just putting the dart on the straw? If the dart is airtight, the air should push it just as much as it would normally. (diagram below) On an unrelated note, I apologize if this is in the wrong section. The topic had to do with modding guns, so...yeah.