to pull; to tug; to draw (attention, sympathy, etc.); to attract (e.g. interest); to draw back (e.g. one's hand); to draw in (one's chin, stomach, etc.); to draw (a card, mahjong tile, etc.)
Examples (2 in total)
弾を込めてから、ゆっくりひきがねをひいた。
After loading a round, I slowly pulled the trigger.