elements and trigger may be oriented relative to one another to accommodate the individual needs of each user set screws 32 33 are provided to lock the head relative to the body in the desired setting the body 18 can be of any desired configuration such as the palm type shown in fig1 with a suitable wrist strap 34 held in place between the base and cover by retainer 36 or the hand held thumb release as shown in fig4 the trigger 26 is pivotally carried in the head and includes a through hole 38 for receiving the pin 24 an adjustable stop knob 40 is provided on the threaded end of the pin and may be adjusted relative to the trigger to fine tune the travel stroke required to release the sear elements a set screw 42 is provided to maintain the knob 40 in position bearing surfaces such as washers 44 and 45 are provided in the enlarged ends 30 31 of the shaft 20 to slidably carry the pin 24 the actuator end 46 of the trigger is carried between shaft end 31 and knob 40 whereby movement of the trigger finger 48 to the left as shown pulls the pin 24 and yoke 28 to release the sear elements 15 16 see fig2 a compression spring 50 may be provided between spool end 30 and yoke 28 to normally bias and urge the pin yoke and trigger into the closed position fig1.