Well, you left a big hole in your explanation, the claymore projectiles can hit a brick. Second, it can use Raycast-to-Player/Bot Distance Checks I believe.
I think a mine would be pretty useful. As far as I know, there isnt one yet. It would be a one use item and when you use it, it drops straight down and shoots short range invisible projectiles in front of it. If someone walks into one of the projectiles,an explosion sound plays and the player gets 100 damage. The mine would also disappear when the explosion sound plays.
That landmine is about as close as we are going to get with a claymore right now.\Instead of a raycast detection, what about making a zone in front of the model?
Ok,now I know. I guess it would ignore bricks and vehicles, and raycast to a certain distance?