Semi-automatic paintball markers are the next generation after Pump-action markers . They appeared in the early 90s. The first models were Golden Eagle and VM68. They had considerable weight, but their main advantage was no need for manual recharging. The next most popular models were semi-automatic models high pressure AutoMag and low pressure AutoCocker.
Semiautomatic markers can be divided into the following types: Open Bolt , Closed Bolt and Blow Forward.
Open Bolt also called “Blow Back” is the system where bolt is placed to an extreme position between shoots.
Closed Bolt is paintball gun system that has pneumatic trunk, which is controlled by pneumatic switcher. In contrast to the previous design virtually all of the gas power is spent on a shot and a only small part of it is used for devices. This system is more effective because of more efficient gas distribution. It also deemed more accurate due to the immobility of the bolt at the moment of the shot. The disadvantage of this principle is a complex structure of the device that is needed for fine-tuning.
In Blow Forward system the bolt stays is in the rear position. After the release, device opens valve, gas drives the bolt forward and the ball is sent to the chamber. After that, the gas goes ahead of the bolt and makes a shot. While moving forward bolt compresses the spring, it returns the bolt and sends the ball directly to the marker.
Such system is also deemed effective, as the entire energy of the gas is spent on the shot but not on the reload.
Semiautomatic guns are the most common type of paintball markers. Such guns also can be divided into markers for beginners and markers for experienced players. This division is very sketchy, because players can play both types of markers and the main difference is financial capability of the player and his goals.
The price range for such markers is very wide $150 – $ 800
The main advantages Semi-automatic paintball markers are:
- The ability to operate under different temperature and humidity conditions;
- Ability to operate on various gases (carbon dioxide, or a mixture of air and nitrogen)
- Low price
Cons of semi-automatic markers:
- Low average fire rate;