Heckler And Koch HK USP Compact Pistol Operators Manual

11HK Universal Tactical Light and laser aimers to be
mounted on the HK USP Compact without modification
to the pistol.  
NOTE
Improperly designed or installed accessories
may result in damage to the USP mounting
grooves and/or the USP Compact pistol. Such
damage is not covered under the limited
lifetime warranty. Be certain to use only HK Au-
thorized Accessories and follow installation
and precautions carefully.
At Heckler & Koch, form follows function. All HK pistols
are designed and manufactured to...

12Frame
Extension Slide Release
Bobbed
Hammer Slide
Serial Number
Ambidextrous
Magazine 
Release LeverStandard Floor Plate
Barrel 
Locking 
Block
Rear Sight
ExtractorControl 
Lever Front Sight
Trigger
Universal Mounting 
Grooves
Trigger GuardSlide Release Axle
Finger Recesses
Figure 12B (above)
Extended Floor Plate
Ejection PortSECTION 2 NOMENCLATURE
Figure 12A (below)
Reference
Line
Frame
Lanyard
Loop 

13
SPECIFICATIONS
USP45 Compact  USP40 Compact  USP357 Compact USP9 Compact _________________________________________________________________________________________________________________Caliber.45 ACP.40 S&W .357 SIG9mm x 19ParabellumOperating PrincipleShort recoil
Action TypeModified Browning type, linkless
_________________________________________________________________________________________________________________SightsFixed patridge style, adjustable for windage & elevation, standard 3-dot or...

14
5. Inspect chamber- inspect chamber for the pres-
ence of a cartridge or empty case by:
• Visually viewing chamber through open ejection
port and;
• Physically inserting finger into chamber through
ejection port to check for the presence of a car-
tridge or empty case.
Remove any cartridges or empty cases from the cham-
ber or from within the pistol.
The HK USP Compact is now considered “Clear”.
General - (Refer to page 12 for the location of the fea-
tures described below)
Heckler & Koch USP and USP...

15 on the end of the recoil spring guide rod. The locking
block disengages from the slide and the slide continues
rearward independently from the barrel. The extractor,
located on the right side of the slide extracts the spent
case. The ejector, positioned in the left side of the
frame, rearward of the magazine well then ejects the
fired cartridge case. The rearward moving slide then
cocks the hammer, and compresses the recoil spring.
Once fully to the rear, the compressed recoil spring
pushes the slide...

16
OPERATING CONTROLS & COMPONENTS
WARNING
The HK USP Compact incorporates single action
and/or double-action modes of operation. Any-
time the trigger is pulled with the control lever in
the fire (horizontal) position and a cartridge in
the chamber, the pistol will fire from either the
hammer down or cocked positions.
Double/Single-action modes -For Variants 1, 2, 3, 4,
9, & 10 in the double-action mode, pulling the trigger
will cock the hammer and immediately release it firing
the first chambered...

17 Figure 17A
To fire the pistol, the front of the control lever is moved
down horizontally into the “FIRE” position.  In this posi-
tion, the “F” on the lever aligns with the reference line
located on the frame.  (See Figure 17B)  With the con-
trol lever set on  “F”, the pistol will fire if the trigger is
pulled and a cartridge is present in the chamber.
Figure 17B
Figure 17C  
Control lever as a decocking lever -  On HK USP
Compacts without the “SAFE” position (Variants 3 & 4),
the front of the...

18 Control lever as a safety/decocking lever -  On USP
Compact Variants 1 and 2, the control lever can be
placed in the safe, fire, and decocking positions
described earlier. A USP fitted with this control lever can
be carried as a single action or double action pistol, with
or without the safe position. The control lever also
allows the cocked hammer to be decocked when the
control lever is fully depressed. (See Figure 17C).
WARNING
The USP Compact should not be carried in the
single action mode without...

19 The trigger guard is slightly recurved and grooved to
provide a firm grip when using two hands or gloves to
fire the pistol.  The frame is a one-piece molded 
component with metal inserts (locking insert and 
guiding part) cast into the frame during production.
The slide rides on these metal inserts during operation.
The frame contains mounting grooves for accessory
attachment and finger recesses located to the left and
right of the magazine well for manual extraction of the
magazine, if necessary....

SECTION 4  AMMUNITION
WARNING
Heckler & Koch specifically disclaims any respon-
sibilities for any damage or injury that should occur
because of, or as a result of, the use of faulty,
remanufactured, or reloaded (hand loaded)
ammunition, or of cartridges other than those for
which the pistol was originally chambered for.
The HK USP Compact is designed to fire quality,
factory loaded ammunition loaded to SAAMI specifica-
tions for use specifically in handguns. For use with
ammunition with hard primers...