I also made a Nerf claymore. Though this isn't as cool as my Nerf grenade launcher its basically just an idea. I know it sucks in distance but that's why i posted this so i could get more ideas and hopefully come out with a finished project. So I'm curios to see what you guys think so please comment with ideas.
Here is the link:
I think your claymore has great potential. Remember that the energy source for this "explosion" is the opening action of the lunch box--This could probably be increased with rubber bands mounted to the outsides of the box. Doing this will make to box open faster, increasing the initial velocity of the darts, which in turn will increase the range.
Also, explore new ammo-- The aerodynamic properties of a nerf dart are not helpful when it may be launched in any orientation. I would guess 3/4"-ish medium density foam balls to be ideal, but I don't know where / how to get them.
I don't really understand what about making a fun NEW nerf toy is milsim. Nerf doesnt have any good, safe explosive options, and this has potential to change that. This is the HOMEMADES section, where we are supposed to be developing new nerf technology, not playing fashion police over a guy's shirt, or hating on gameplay that becomes possible due to new technology.