firing pin block
hammer safety block
Safety Catch.
The hammer spring is the primarily safety feature. Depending on the extent of the mechanical failure the firing pin spring could be providing protection also. Do not confuse the firing pin spring with the striker pin spring which is the spring that pushs (strikes) the firing pin into the round which ignites the primer.
An M9 pistol is not capable of automatic fire, in any form. The firing mechanism is not designed to fire a new round until the trigger is released and pulled again. That is, what is commonly called the "action" of the pistol needs the trigger to be pulled to release the firing pin after each round is fired.
The purpose of Beretta's firing pin catch is to prevent the firing pin from going forward from in the event that the pistol is dropped. It's just simply redundancy, every precaution to not put little holes into your body is taken.
Action potential is nerve impulse triggered when a neuron reaches its threshold, or trigger point for firing. Threshold trigger point for a neuron's firing about negative 50 millivolts.
Part of the firing mechaism prevents the hammer from falling again until the trigger is released to reset it. Without it, you would have the possibility of firing more than one shot per pull of the trigger.
If you are referring to a "SET Trigger" on a rifle. The Set Trigger releases all the normal mechanisms in the action but does not release the hammer on the rifle, but it sets up the firing trigger to act like a "Hair Trigger" just barley touch the firing trigger and the rifle goes off. It's used in hunting. It is common on black powder "Hawkins Rifles."
Guards the trigger against accidental pressure, and reduces the chance of an accidental firing of the gun.
It's called the trigger or fireing pin
It means the minimum current can trigger the SCR to operate.
Trigger with trigger bar, trigger spring, connector, trigger housing with ejector, locking block, slide stop, magazine catch, magazine catch spring, slide lock, slide lock spring, locking block pin, trigger pin, trigger housing pin, Frame, Magazine tube, magazine floor plate, magazine spring, magazine insert, magazine follower, front sight, extractor, rear sight, firing pin channel liner, extractor depressor plunger, extractor depressor plunger spring, Spring loaded bearing, spring cups (2), Firing pin spring, firing pin, firing pin spacer sleeve, slide cover plate, firing pin safety spring, firing pin safety, barrel, recoil spring assembly, 36 parts unless I missed one.
The Heckler and Koch MP5 has three firing rates:semi-automatic-which fires one bullet each time and as fast as you pull the trigger. Three-round burst-which fires three rounds in rapid succession after the trigger is pulled. Automatic-Which as long as you are pulling the trigger, it carries on firing either until you release your finger from the trigger or until the magazine runs out. If with an endless clip, the firing rate would be 800 Rounds per minute. Although there is an available conversion to sporting rounds (.22 LR) which reduces the firing rate to 650 Rounds per minute