Definition of self-cocking in English:

self-cocking

adjective

  • (of a gun) having a hammer that is raised by the trigger, not by hand.

    • ‘From 1836 until the advent of the 1911 Government Model, which was simply the packing of the .45 Colt into a modern self-cocking pistol, the single-action was king.’
    • ‘The gun is self-cocking, with an easy trigger pull for every shot after the first until you hit the decocking lever.’

Pronunciation:

self-cocking

/sɛlfˈkɒkɪŋ/