point it in a safe direction ...that's why it's good not to have one o' these around a bunch of drunk jarheads...garauntee some one 'd be headin fer the emergency room...
The whole thing is PVC plumbing supplies... There are all kinds of PVC chambers and connectors and stuff.
We have used WD-40 too... It does work great.
My fisher-person friend stuck her lure and weight down the barrel in front of the potato and released the reel on her fishin pole. Got a 50 yard cast our of it!