Why do they call it a DA trigger?

the gun range i frequent routinely refers to the glock action as a one and a half action gun. (the half being the 50% precock) this can be very confusing to newcomers but might more accurately describe the action.

this would make a steyr a 1.28 action gun because we're 72% pre-cocked and that much closer to striker release. which can support the idea that the steyr is in fact closer to a single action than a double action.

however, pulling the striker rearwards before it strikes is the definitition of double action.

true projekt, there are very few true double action stiker pistols. i believe many in the taurus line are true double action. when you pull the trigger only one thing can happen. the striker is always pulled its full travel.

double and single action are terms from the revolver days. there were no partially precocked revolvers so a third distinction was never made, leaving us with this engaging exchange in search of a new term.

most hammer based double/single guns such as sig aren't truly double action either. in many cases the hammer is "slightly" to the rear in the decocked mode. they'll list three pull weights. decocked, single (cocked) and the third weight is a second attempt double action where the hammer is all the way forward and must be pulled from completely down full to the rear. this is incidentally why i don't like double/singles. trigger control becomes a chore because 1 of 3 things can happen.