Topic summary
Decocker
Extracted from the Wikipedia article Safety (firearms).
Decocker
Most traditional semi-automatic double-action/single action (DA/SA) pistols are designed to be carried with the hammer down (uncocked) on a chambered round, with or without a manual safety engaged. The pistol is considered safe in this state as the "double-action" pull that both cocks and fires the firearm is both longer and heavier than the "single-action" pull that simply releases the cocked hammer, and thus an inadvertent trigger pull is less likely.