which the upper arm 101 is bent can affect the speed at which the trigger is reset one having ordinary skill in the art will appreciate that if the angle 203 at which the upper arm 101 is bent and or the angle 204 at which the upper arm 101 and the lower arm 104 is articulated around the spring pivot pin 201 is decreased it will take a longer amount of time for the bolt carrier group to interact with the upper arm 101 as the upper arm 101 will be in a more rearward position which decreases how fast trigger reset can occur alternatively if the angle 203 at which the upper arm 101 is bent and or the angle 204 at which the upper arm 101 and the lower arm 104 are articulated around the spring pivot pin 201 is too great the trigger assist spring 102 will be in contact with the bolt carrier group 102 too soon in the firing cycle and thus apply pressure to the trigger 103 too soon in the firing cycle and not allow the trigger sear 106 to disengage the hammer interlock 107 in sum although the exact angles of the trigger reset assist spring 102 may vary from firearm to firearm.