Heckler&Koch USP TACTICAL - Manual (Page 24)

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used on the barrel of the USP Tactical pistol will accept only those accessories designed
for the pistol. The MK23 sound suppressor cannot be attached to the USP45 Tactical
pistol! A specially designed sound suppressor is available for the USP45 Tactical pistol.
Prolonged use of +P ammunition through the pistol with the sound suppressor attached is not
recommended.
CAUTiON: When used with a suppressor, use only HK approved suppressors. even
though all types of high velocity supersonic (+P) ammunition can be fired, for
maximum effectiveness (suppression) only subsonic ball ammunition should be used
when a sound suppressor is attached.
Place a drop of lubricant on the barrel O-ring during cleaning and replace it by hand if/when
necessary. Spare O-rings are provided with each USP Specialized pistol (Fig. 32 & 33).
elongated target slide & extended barrel
The additional length of an elongated slide on several USP Specialized models aids
in balance during shooting. Together with the hammer forged po lyg o nal barrel, these
components contribute to the high level of accuracy these pistols achieve.
extended foorplate magazine
The USP Specialized Models can use magazines with extended floorplates; providing
a larger, and for many shooters, a more comfortable gripping area. It also protects the
magazine if dropped and assists in the manual removal of the magazine in the event a
stoppage occurs. This floorplate is removed and installed like the standard floorplate.
The use of an extended floorplate does not affect the magazine capacity. Some variants
of the Expert, Elite, Custom Combat, and Combat Competition have a special jet funnel
feature on the grip for use with extended capacity magazines.
Fig. 34 Fig. 35 Fig. 36
HK Jet Funnel Allen Removing USP Match Counterweight base
wrench screw counterweight with and screws
3 mm Allen wrench
Loaded chamber indicator
The extractor of most USP Specialized pistols doubles as a loaded chamber indicator
anytime a live cartridge or empty case is present in the chamber. A red painted portion of the
extractor, or its protruding tactile feel, indicates the chamber is loaded.
jet Funnel (present on some USP eLiTe & exPerT models)
An extension of the standard magazine well, the HK jet funnel system fits onto full size USP
pistols allowing the use of special translucent high capacity magazines, enhancing grip
ergonomics, and speeding magazine reloads with its internal bevel. The jet funnel feature is
commonly found on the USP Elite and USP Expert models. The jet funnel is installed by an
Allen screw (see Figure 34) that fastens into the bottom of the frame by replacing the lanyard
insert with a special hammer spring/hammer strut retaining piece held in place by the lanyard
loop insert pin. The HK lockout device and standard lanyard loop insert can not be used with
the jet funnel.
Mounting and removing the counter weight (USP MATCH ONLY)
The counter weight should be mounted and removed with the pistol slide in the closed
position. Mount the counter weight by placing the counter weight bases so they fit
into the USP mounting grooves located on the sides of the pistol frame. Secure the
bases by tightening the two 3 mm Allen screws on the right side of the frame, DO NOT
OVERTIGHTEN (see figure 35 & 36). Draw back the slide and release it letting the action
close. Check to ensure the counter weight does not interfere with the movement of the slide.
To remove the counter weight, reverse the assembly sequence.