HK4 (Heckler & Koch 4) is a German pistol developed by designers Alex Seidel and Tilo Möller in 1967 .
| Hk4 | |
|---|---|
| Type of | pistol |
| A country |  Germany |
| Service History | |
| Years of operation | 1967 - 1986 |
| Adopted | |
| In service | Germany |
| Production history | |
| Constructor | |
| Designed by | 1967 |
| Manufacturer | Heckler & Koch |
| Characteristics | |
| Weight kg | 520 gr |
| Length mm | 157 mm |
| Barrel length mm | 85 mm |
| Cartridge |
|
| Caliber mm | is changing |
| Work principles | free shutter |
| Rate of fire rounds / min | ~ 30 rds / min. |
| Maximum range, m | 30 meters |
| Type of ammunition | 8 or 7 rounds magazine |
| Aim | not adjustable |
System
The Heckler & Koch 4 pistol works due to the automation based on the course of the free shutter . The trigger mechanism of double action, has a trigger type. A return spring is worn on the gun barrel. The fuse box is located on the shutter. When turned on, the fuse separates the hammer and the hammer . The magazine latch button is located below the pistol grip. The sight is unregulated.
Interesting Facts
The main distinguishing feature of this gun is the ability to change the caliber , for this the barrel with the magazine is replaced and the position of the drummer is changed.