I have an Heckler & Koch HK4 .380ACP, .32ACP, 25ACP & .22LR Semi-Auto Pistol 1981.

Specifications Includes:

Make: Heckler & Koch, HK

Model: Hk 4 Second Variation

Serial Number: 31541

Year of Manufacture: 1981 (IB date code)

Caliber: 9mm Kurz (.380 ACP), 7.65(32 ACP), 6.35(25 ACP) and .22 LR. 

Action Type: Single / Double Action Semi-Automatic Pistol convertible between 4 different calibers Via interchangeable barrels and magazines with slide mounted manual safety and heel style magazine release. The pistol also has a magazine disconnect.     

Type of Finish: Blue & Black

Finish Originality: Original

Bore Condition: The .22LR barrel: The bore is bright and the rifling is sharp there is no erosion in the bore. The feed ramp is smooth and shiny. 

The .380 ACP barrel: The bore is bright and the rifling is sharp there is no erosion in the bore. 

The .32 ACP barrel: The bore is bright and the rifling is sharp there is no erosion in the bore. The feed ramp is smooth and shiny. 

The .25 ACP barrel: The bore is bright and the rifling is sharp there is no erosion in the bore. The feed ramp is smooth and shiny.