Busta, "lame" idea or not, is not the issue here. Airsoft in many respects mimics the real world in it's scenarios and weaponry. Since there actually is such a device, it stands to reason that there is a real world need for it, and consequently, an airsoft need as well. In WWII and the Korean conflict, the US fielded a muzzle mounted grenade launcher that was quite effective. Although I have yet to see an airsoft version of the device, it wouldn't surprise me if there was one already out there. I know for a fact that there are airsoft reenactment groups in asia that play games revolving around WWII battles. Their uniforms and accoutrements are absolutely impeccable. So, please try to be a little more open minded when it comes to "oddball" airsoft ideas. They may not be so oddball afterall.
TheRev