Mr. Mundy wins! Exactly right sir. It boils down to "worst case scenarios"... (Note: this only applys to metal mods)
With the pos end of the battery only touching the the (insulated) center pin of the mech, the "worst case scenario" is that the button gets stuck in the fire position or , in the case of broken shrink wrap, the switch gets bypassed all together... There will always be a load in place preventing a dead short... The coil, of course being the load and removing the atty, will always break the circuit.
With the battery in upside down, the scenario that Alex described can become a very real possibility. To make it even scarier... In that scenario, there is enough amperage being passed for (at least in theory) an arc between battery and the firing pin to weld the two together.
With the pos end of the battery only touching the the (insulated) center pin of the mech, the "worst case scenario" is that the button gets stuck in the fire position or , in the case of broken shrink wrap, the switch gets bypassed all together... There will always be a load in place preventing a dead short... The coil, of course being the load and removing the atty, will always break the circuit.
With the battery in upside down, the scenario that Alex described can become a very real possibility. To make it even scarier... In that scenario, there is enough amperage being passed for (at least in theory) an arc between battery and the firing pin to weld the two together.
Luckily nothing was wiped but was scary for a moment.

