I'm working on a bounding mine indoor deployment kit so the mine can be deployed inside as well as outside. I might even be able to make it a shootable target that blows up which would be really interesting for meth lab entry scenarios.
The launchable grenade appears to fly pretty straight, but there's a lot more work still to be done. The current build is triggered by impact to the head of the projectile. I doubt I can do a good airbursting round which would be really cool, but a lot more difficult for me to implement. Besides it'd be difficult to control what range it blows up because launchers vary from model to model.
In hot weather you really need to use the longer delay setting and you always need to remember to put in the rubber plug.
Want nearly free GBB gas?