We claim the ornamental design for a trigger and safety mechanism, substantially as shown and described.
FIG. 1 is a side view of a trigger and safety mechanism attached to a weapon;
FIG. 2 is a perspective view of the trigger and safety mechanism;
FIG. 3 is a first side view of the trigger and safety mechanism;
FIG. 4 is a second side view of the trigger and safety mechanism;
FIG. 5 is a back view of the trigger and safety mechanism;
FIG. 6 is a front view of the trigger and safety mechanism;
FIG. 7 is a top view of the trigger and safety mechanism; and,
FIG. 8 is a bottom view of the trigger and safety mechanism.
The portions illustrated by solid lines are the portions for which the claimed design is intended. Any broken lines on the figures are for illustrative purposes only and form no part of the claimed design.