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A semi automatic shotgun able to fire a shell after every trigger pull

A semi automatic shotgun able to fire a shell after every trigger pull

A semi automatic shotgun able to fire a shell after every trigger pull

Semi auto Shotgun Function

A semi automatic shotgun able to fire a shell after every trigger pull, without needing to manually chamber another round. These firearms use gas, blowback, or recoil operation to cycle the action, eject the empty shell, and load another round.

Many semi automatic shotguns also provide an optional manual means of operation such as by pump action or a charging handle.

A semi-automatic shotgun able to fire a shell after every trigger pull

Essentially, semi-auto shotguns operate based on two different principles: recoil-system and gas-system. 

Firstly, we have the principle of the locked, recoil-system action, in which the barrel travels a certain distance, together with the bolt, until the geometric lock releases, separating and allowing the bolt to continue its rearward travel ejecting the spent case, and rechambering a fresh round.

The era of semi-auto shotguns began at the start of the 20th century with the legendary BROWNING Auto 5, which operated based on this functional principle, and whose underlying design was also found in weapons by other manufacturers, among them the early semi-auto actions by REMINGTON and FRANCHI.

The principal drawbacks of the original designs for semi-auto actions were their fairly rigid dependence on a certain ammunition and their, at times, hefty recoil. Users were forced to adjust these shotguns to suit the respective load, i.e. the Auto 5 needed the peculiar ‘friction rings’ to be set to modulate recoil and ensure operation with a given load.

Some users were also irritated by the barrel retracting. So initially the designers turned their attention to sorting out the barrel retraction and minimizing the dependence on certain ammunition. There were a few more attempts involving recoil-system actions, but by the Second World War at the latest, the future clearly belonged to gas-system actions. 

There’s nothing unfamiliar about how this weapon works: The gas port is situated in the barrel around the action. The gas syphoned there controls a piston to operate the reload mechanism.

The main drawback of gas-system actions is the carbon residue caused by the gas flow. But recent years have seen radical improvements in terms of greater independence from certain ammunition and carbon deposit contamination, at times even touching perfection. 

Examples include the BERETTA A 400 Xplor Unico, the REMINGTON Versa Max and the BROWNING Maxus.

#BCFirearmAcdemy #Firearms #Training #BC #Canada #Delta #Vancouver #CORE #Hunter #Education #CFSC #License

Eric Beer | BC Firearm Academy

3229 Fraser St, Vancouver, BC V5V 4B8

604-592-2410

http://bcfirearmsacademy.ca

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