Semiautomatic or semi-automatic An automatic machine or device is able to operate independently of human control, and a "semi-automatic" version would or might require separ…ate human control. Pistols, rifles, and other weapons are termed "semi-automatic" if they fire only one round for each operation of the trigger. An automatic weapon, or one in automatic mode, will fire continuously as long as the trigger remains depressed, until the magazine is depleted. (MORE)
In 1884, American-born inventor, Sir Hiram Stevens Maxim, developed the first semiautomatic rifle, when he modified a Winchester rifle so the power of the recoil would eject t…he spent cartridge and load the next round. (MORE)
Modern semiautomatic weapons became available around the turn ofthe 19th century. Early in the 20th Century, these types of weaponsbecome widely available. Although revolvers …have been around since the early 1800's and CAN fit the definition of semiautomatic: "Firing ONEround for every pull of the trigger" they generally are excluded asit is human muscles that rotate the cylinder in preparation for thenext shot. This is not different that working a bolt-action, orpumping a shotgun. If there was a revolver-type handgun that usedthe RECOIL of the previous shot to rotate the cylinder, that COULD be considered semiautomatic. (MORE)
A single shot pistol, a Derringer and even a revolver aretechnically NOT considered semiautomatic. To be semiautomatic, the weapon would need to use the energy from aprevious …round to cycle the action. Revolvers use the muscle energyof the shooter's finger to revolved the chamber. (MORE)
No specific information, estimated at multiple millions. The semi-auto rifle is NOT a new invention, and has been produced for a little over 110 years. There are approximately… 275 million privately owned forearms of all types in the US. (MORE)
A semiautomatic weapon is one in which one bullet is firedeach time the trigger is pulled, until the magazine is out ofbullets..
These types of weapons are often called "au…to loaders" because partof their functioning is to load a fresh round into the chamber forthe next shot..
A typical semiautomatic firearm functions in the followingmanner:.
1- Loaded magazine is inserted into the weapon.
2- A round is chambered (cocking, racking the slide, etc...).
3- The trigger is pulled, a hammer hit a firing pin (or striker)which fires a bullet.
4- Either the recoil energy, or gas pressure is used toautomatically extract the spent brass.
5- This spent brass is ejected from the weapon.
6- A fresh round is stripped from the magazine and chambered.
7- The hammer (striker) is also reset automatically.
SO the shooter only needs to pull the trigger again to shootanother bullet. In an automatic firearm, MORE than one bullet canbe fired with each pull of the trigger. The same functions occur,just that a mechanism called the "sear" doesn't catch the hammerand prevent another shot without releasing and re-pulling thetrigger.. (MORE)