Section I Introduction

Congratulations on your purchase of an HK USP pistol.The Heckler & Koch USP (Universal Self-loading Pistol) is the first HK pistol designed especially for the demanding needs of the American shooter.

Features favored by US civilian, law enforcement, and military users provided the design criteria for the USP. Its controls are uniquely American, influenced by such famous and successful designs as the Government Model 1911 pistol— and like the Model 191 I, the USP can be safely carried "cocked and locked".

The control lever, a combination safety and decocking lever, is frame mounted and quickly accessible; unlike the slide mounted safeties common on many pistols.The USP control lever has a positive stop and returns to the "fire" position after decocking.

Using a modified Browning-type action with a patented HK recoil reduction system, the USP is built to take the punishment of the most powerful +P loads.

The polymer frame of the USP was designed using technical experience gained by HK engineers in the development of the world's first composite material pistols, theVP70Z and P9S.This same high-strength and corrosion free material is used in the Mark 23 .45 ACP pistol designed by Heckler & Koch for the US Special Operations Command (USSOCOM).

Major metal components on the USP are also corrosion resistant. Outside metal surfaces are protected by an extremely hard, nitro-gas carburized black oxide finish. Stainless steel models are also available. Internal metal parts are coated with a special Dow Corning anti-corrosion process that reduces friction and wear.The HK USP is presently available in calibers .40 S&W, 9mm Parabellum, and .45 ACP.

The design characteristics of the HK USP provide a wide range of flexibility for users. By using a modular approach to the internal components, the control lever function of the HK USP can be switched from the left to the right side of the pistol to accommodate left handed shooters.

The USP can also be converted from one type of trigger firing mode to another.This includes combination double-action and single-action (DA/SA) modes and double action only (DA-Only) modes.

The USP is available in the following trigger/firing mode configurations (see Figure 9).

NOTE:Trigger/firing mode conversion can only be made by a HK certified armorer.

O DA/SA with "safe" position and control lever (manual safety/decocking lever) on left side of frame @ DA/SA with "safe" position and control lever (manual safety/decocking lever) on right side of frame

Variants O and @ allow the user to carry the pistol in a single-action mode (cocked and locked) with the manual safety engaged.This same pistol, without modification, can be carried in double-action mode, with or without the manual safety engaged.

© DA/SA without "safe" position with control lever (decocking lever) on the left side of frame © DA/SA without "safe" position with control lever (decocking lever) on the right side of frame

Variants © and © provides the user with a frame-mounted decocking lever that does not have the "safe" position.This combination only allows the hammer to be lowered from SA position to DA position. It does not provide the "safe" position to prevent the pistol from firing when the trigger is pulled.

© DA-Only with "safe" position and control lever (manual safety) on the left side of frame

© DA-Only with "safe" position and control lever (manual safety) on the right side of frame 0 DA-Only without control lever (no safety/decocking lever)

For the DA-Only user, variants ©, ©, and © of the USP operate as double action only pistols with a bobbed hammer always returning to the DA position (forward) after each shot is fired.To fire each shot, the trigger must be pulled through the smooth DA trigger pull.Variants © and © have a manual safety lever.

No control lever is provided on variant 0.

© DA/SA with "safe" position and control lever (manual safety) on the left side of frame

© DA/SA with "safe" position and control lever (manual safety) on the right side of frame

Variants © and © allow the user to carry the pistol in a single-action mode (cocked and locked) with the manual safety engaged. Unlike variants © and ©, the control lever can not be used to decockthe hammer.These variants are the ideal choice for users who prefer shooting the pistol in single-action (SA) mode with the thumb placed on top of the manual safety.This same pistol, without modification, can be carried in the double-action mode and provides second primer strike ability to single-action shooters.

Due to this innovative design approach, it is possible to modify an HK USP into any one of the listed variants.

Changing the trigger/firing mode of the pistol is accomplished by installing a different set of component parts. Not only can the control lever function (safety/decocking) be switched from one side of the pistol to the other, it is possible to have a single-action/double-action (SA/DA) version converted to a double action only (DAO) version, or to any other configuration listed. Optional ambidextrous controls are available and are standard on USP Expert models.

This unique design allows the HK Universal Self-loading Pistol to be configured for a variety of purposes depending on the requirements of the user, without having to purchase a new pistol.

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Variant 1

.45 / .40 / 9mm

Variant 2

.45 / .40 / 9mm

Variant 3

.45 / .40 / 9mm

Variant 4

.45 / .40 / 9mm

Variant 5

.45 / .40 / 9mm

Variant 6

.45 / .40 / 9mm

Variant 7

.45 / .40 / 9mm

Variant 9

.45 / .40 / 9mm

Variant 10

.45 / .40 / 9mm

Figure 9

Fire Modes and Control Functions by Variant

In addition to a wide selection of trigger/firing modes, the HK USP has an ambidextrous magazine release lever which is shielded from inadvertent actuation by the design of the trigger guard. It is possible to depress the magazine release lever with the thumb or index finger of the firing hand, in most cases without adjusting the firing grip.

The metal reinforced polymer magazine is stronger and lighter than conventional metal magazines and will still drop free of the frame when the magazine release is actuated. By using metal magazines in the USP .45, grip size is kept to a minimum. Magazines have a series of viewing holes on the back side for counting the cartridges remaining inside. Magazine floor plates can be easily removed without tools during disassembly.

The extended slide release is positioned to allow easy actuation without adjustment of the grip of the shooting hand.Another useful feature is the absence of a magazine lock-out device.

CAUTION: The USP will fire if the magazine is removed, a cartridge is in the chamber, and the trigger is pressed.

One of the most important unique design features of the

HK USP is the mechanical recoil reduction system. This system is incorporated into the recoil/buffer spring assembly located below the barrel. Not only does this system reduce the felt recoil to the shooter but it also reduces the recoil forces to the components of the pistol, thus greatly extending the life expectancy of the USP.

This recoil reduction system buffers the impact of the slide on the frame as the barrel unlocks and when the slide travels rearward. This same system was incorporated into the HK .45ACP Handgun designed for the US Special Operations Command. Its buffering effect plays a major role in extending the service life of the HK USP, especially when considering the punishment inflicted on any pistol when firing powerful +P cartridges.

The recoil reduction system employed in the HK USP is insensitive to ammunition types and requires no special adjustment or maintenance. It functions effectively in all models of the USP.

Two metal inserts are molded into the polymer frame on which the slide recoils.These inserts are not subjected to the full recoil forces of the cartridge due to the buffering action of the recoil reduction system. The HK USP is an extremely safe firearm, with no less than four safety features, some passive and some active in nature. Simple to field strip and maintain, the USP is a reliable and trouble-free pistol.

The special "HE" (Hostile Environment) finish employed on major metal parts of the HK USP resists even the worst types of corrosion and wear, including prolonged exposure to salt water. Stainless steel models are also available for users who prefer the appearance and corrosion resistant properties of that material.

NOTE: Holster wear of the finish is normal and not covered under warranty. Any finish may wear over time.

The barrel of the USP is cold hammer forged for strength and durability. USPs are fitted with barrels that have HK's unique polygonal bore profile. Polygonal bores increase muzzle velocity and reduce barrel wear.

Finally, a pair of universal mounting grooves are incorporated into the front of the polymer frame.These grooves allow various types of accessories and targeting devices, such as the HK Universal Tactical Light, laser aimers, and optical sights to be mounted on the HK USP without modification to the pistol.

NOTE: Improperly designed or installed accessories may result in damage to the USP mounting grooves and/or the USP pistol. Such damage is not covered under the limited lifetime warranty. Be certain to use only HK Authorized Accessories and follow installation and precautions carefully.

At Heckler & Koch,form follows function.All HK pistols are designed and manufactured to meet the operational requirements of demanding users. The Heckler & Koch USP is no exception. In a world of compromise, some don't.

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