Conditional activation of a cartridge

1. A firearm for conditional activation of a provided cartridge, the cartridge having an electrified projectile and a first mechanical feature, the firearm comprising:

a. means for opposing the first mechanical feature with a second mechanical feature of the firearm wherein, during opposing, mechanical interference between the first feature and the second feature results in an excess head space;

b. means for inhibiting activating of the cartridge in response to the excess head space and, in the absence of excess head space, for activating the cartridge to launch the electrified projectile from both the cartridge and the firearm; and

c. wherein the second mechanical feature inhibits activation of a conventional cartridge that deploys a lethal force.

2. A weapon for conditional activation of a provided cartridge, the cartridge having an electrified projectile and a first mechanical feature, the weapon comprising:

a. an activator comprising a breech block, wherein the breech block comprises a second mechanical feature;

b. a station that positions the cartridge so that the first feature opposes the second feature; wherein:

i. on condition that the first feature does not mechanically interfere with the second feature, the activator activates the cartridge to launch the projectile from the cartridge; and

ii. on condition that the first feature mechanically interferes with the second feature resulting in an excess head space, the activator, in response to the excess head space, is inhibited from activating the cartridge; and

c. wherein the first feature and the second feature do not participate in removal of the cartridge from the station.

3. The weapon of claim 2 wherein the station comprises a bolt comprising the second feature.

4. The weapon of claim 2 wherein the station comprises a chamber comprising the second feature.

5. A weapon for conditional activation of a provided cartridge, the cartridge having an electrified projectile and a first mechanical feature, the weapon comprising:

a. an activator;

b. a second mechanical feature;

c. a station that positions the cartridge so that the first feature opposes the second feature; wherein

d. on condition that the first feature does not mechanically interfere with the second feature, the activator activates the cartridge to launch the projectile from the cartridge;

e. on condition that the first feature mechanically interferes with the second feature resulting in an excess head space, the activator, in response to the excess head space, is inhibited from activating the cartridge;

f. the first feature and the second feature do not participate in removal of the cartridge from the station; and

g. a positioning mechanism that positions the cartridge with respect to the activator, wherein the positioning mechanism comprises the second feature.

6. The weapon of claim 5 wherein the second feature inhibits activation of a conventional cartridge that deploys a lethal force.

7. The weapon of claim 5 wherein the activator comprises a firing pin.

8. A method performed by a weapon for conditional activation of a cartridge, the cartridge having an electrified projectile and a first mechanical feature, the method comprising:

a. detecting whether the first feature and a second mechanical feature of the weapon cooperate to cause an excess head space;

b. inhibiting activating of the cartridge on condition of detecting the excess head space;

c. activating the cartridge to launch the projectile from the cartridge on condition of detecting an absence of excess head space;

d. removing the cartridge from the weapon, wherein removing does not involve the first feature; and

e. wherein detecting comprises attaining, by a positioning mechanism of the weapon, a first position in the absence of excess head space and attaining a second position as a result of excess head space, by the positioning mechanism for positioning the cartridge with respect to an activator of the weapon.