
The Base Fuze Mk 163 Mod 0 is similar to the Mk 157 Mod 2, and the Mk 161 Mod 0 is similar to the Mk 159 Mod 1. In addition to retaining the projectile type gas seal previously mentioned, the Base Fuzes Mk 163 Mod 0 and Mk 164 Mod 0 have an improved detonator-shutter locking arrangement.
No information about functioning.
No information about hazardous components.
OP 1664, Volume 1 - US Explosive Ordnance (1947)