The usage of hunting guns has led to a significant decrease in duck and poultry numbers in a short span. However, the guns they employ possess an exceedingly peculiar shape.
Throughout history, humans have strived to develop larger and more potent weapons with the belief that larger sizes would confer greater power. While some of these endeavors have succeeded, the majority have yielded weapons with somewhat bizarre appearances and inefficient operations.
However, the type of gun we're discussing today is a Punt gun, which is a type of hunting gun but with a substantial size (if of regular size, it would be termed a flower gun in Vietnam).

In the early 1800s when duck-hunting guns were invented, duck hunting was an immensely popular activity. Simultaneously, during this period, the demand for meat and feathers for making women's hat materials surged. Consequently, to facilitate hunting, hunters began seeking ways to kill more ducks more easily. Thus, the Punt gun was born.
Custom-made and measuring over 8 feet (2.4 m) in length and 2 inches (5 cm) in diameter, especially with some guns reaching 4 m in length and weighing approximately 50 kg. Such large guns can discharge over 0.5 kg of ammunition in one shot and can kill over 50 ducks and poultry simultaneously.
These guns resemble an oversized version of regular flower guns, but they only have a single barrel instead of double barrels. However, double-barreled versions also exist, but they do not shoot as powerful shots as single-barrel versions, so they are not widely used.

Although these gigantic flower guns operate extremely effectively, they are too heavy for one hunter to operate them easily. Therefore, hunters have developed boats capable of accommodating the weight and size of the gun. These boats are quite long and slender, providing just enough space for a gun and a hunter. Being fixed to the boat, when aiming and shooting, the entire boat will have to rotate towards the target. These giant guns are so powerful that when fired, the boat will be blown back several meters.
Not long after, hunters developed a new hunting method to maximize hunting profits.
They started working in groups of 8 to 10 boats, with hunters surrounding a flock of waterfowl. They cooperated to coordinate gunfire and would shoot simultaneously. In less than a minute, a few hunters have been able to take down an entire flock of ducks, sometimes achieving efficiency up to 500 ducks at once.

However, the fate of these giant guns did not last long. The weapons industry did not support their oversized and cumbersome design, not to mention the devastation they caused - shortly after the Punt guns were introduced, the populations of ducks and water birds in the United States began to decline sharply.
Their numbers decreased significantly due to the effectiveness of these gigantic flower guns, to the point where the US government worked to pass laws prohibiting both hunting for market and transporting these guns across state lines. From 1900 to 1918, a series of federal laws were enacted to prohibit the purchase and use of Punt guns as well as boats that could effectively use Punt guns.

Today, Punt guns are considered an exceedingly rare commodity, with fewer than 100 guns being used worldwide. In the United States, they mainly exist as prized possessions of some collectors or are exhibited in historical museums.
However, in the United Kingdom, they are still in use, but in extremely limited numbers, with fewer than 50 guns still in use in the UK. In this country, there are laws to restrict their usage frequency, reduce barrel size, and use less ammunition than standard Punt guns. When they are used, it is often ceremonial, mainly used in royal ceremonies rather than hunting.
In 1897, at her Diamond Jubilee, Queen Victoria requested a salute with a Punt gun. Since then, at every coronation and significant royal ceremony in the United Kingdom, Punt guns have been used. At Queen Elizabeth II's Diamond Jubilee in 2012, a 21-shot Punt gun salute was fired to celebrate.
