The Weihrauch HW45 is an air pistol manufactured by Weihrauch & Weihrauch

Weihrauch

Weihrauch & Weihrauch GmbH & Co. KG is a German manufacturer of target and sporting air rifles and air pistols. The company also manufactures a small range of cartridge rifles and pistols. In North America they are often distributed under the "Beeman" brand name...

. It is more commonly known in North America

North America

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

 as the Beeman P-1.

The Pistol is described as a sporter and is available in three different calibres: .177, .20 and .22. The HW45 is used for target shooting, plinking

Plinking

Plinking refers to informal target shooting done at non-traditional targets such as tin cans, glass bottles, and balloons filled with water. The term is an onomatopoeia of the sound a bullet or other projectile makes when hitting a tin can, or other similar target, referring to the sharp, metallic...

 and dispatching small game. Its design is based on the cartridge pistol M1911

M1911

The M1911 is a single-action, semi-automatic, magazine-fed, and recoil-operated handgun chambered for the .45 ACP cartridge. John M. Browning designed the firearm which was the standard-issue side arm for the United States armed forces from 1911 to 1985. The M1911 is still carried by some U.S....

, except that it has a greatly enlarged slide to accommodate the powerplant

PowerPlant

PowerPlant is an object-oriented GUI toolkit, application framework and set of class libraries for Mac OS, created by Metrowerks. The framework was fairly popular at the height of the Classic Mac OS era, and was primarily used with CodeWarrior...

.

The HW45 has a self-contained powerplant in the form of a compressed spring. The compression is achieved via an over arm cocking lever incorporated into the barrel

Barrel

A barrel or cask is a hollow cylindrical container, traditionally made of vertical wooden staves and bound by wooden or metal hoops. Traditionally, the barrel was a standard size of measure referring to a set capacity or weight of a given commodity. A small barrel is called a keg.For example, a...

. The HW45 features a Precision adjustable two stage trigger and a micrometer rear sight adjustable for windage

Windage

Windage is a force created on an object by friction when there is relative movement between air and the object.There are two causes of windage:# the object is moving and being slowed by resistance from the air...

 and elevation

Elevation

The elevation of a geographic location is its height above a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface ....

. There is also a grooved dovetail rail for accessories.