society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > parts and fittings of firearms > [noun] > lock > firing-pin (2)
a pin or small rod which strikes the primer in a firearm, fuse, or other explosive device when it is fired or detonated.
A thing which plunges or may be plunged; esp. an instrument or part of a mechanism which works or is… The firing pin in some breech-loading…