Heckler&Koch USP TACTICAL - Manual (Page 15)

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SeCTiON 7 CLeANiNG & MAiNTeNANCe
NOTe: The service life and performance of your USP Series Pistol is dependent upon
the correct handling and proper care by the operator.
Materials required - At a minimum, we suggest the following materials to properly clean
the USP Pistol
• Cleaning rod with handle and patch holder
• Nylon toothbrush
• Bronze bristle bore brush (in the appropriate cal i ber)
• Cleaning patches (in the appropriate caliber)
• Lint-free wiping rag
• Cleaning solvent/lubricant
• Cotton swabs
CAUTiON: Use safety goggles when using solvents and ex er cise care if using
compressed air.
HK Handgun Cleaning Kits, #701956 (9mm & .357SIG), #701957 (.40 S&W), and #701958
(.45ACP) are avail able from HK for thorough cleaning of the USP series pistols and other
firearms.
Cleaning intervals - Normal and Major are the two types of operator cleaning for the
USP Pistol.
Normal Cleaning - Performed after each firing or every twelve (12) months.
Major Cleaning - Often referred to as “detailed clean ing”. Performed after the firing of
500 cartridges or when the pistol is exposed to, or laden throughout with sand, dust,
water (es pe cial ly salt water), or other visible contaminants or foreign matter.
Normal Cleaning
CAUTiON: Do not use a stainless steel bore brush which can scratch the polygonal bore
and reduce accuracy.
Slide -
• Gently scrub all in ter nal surfaces of the slide using the nylon tooth brush moist ened
with solvent.
• Remove all loose fouling from all sur fac es of the slide using a rag and cotton swabs.
recoil spring assembly -
• Remove all vis i ble fouling us ing solvent, a nylon tooth brush, a rag and cotton swabs.
Barrel (with locking block) -
• Moisten a bronze bore brush with sol vent and scrub the bore from chamber to muz zle
at least six (6) pass es, back and forth.
• Re move the loose foul ing from the bore using clean ing patches.
• Gen tly scrub the ex te ri or of the barrel and lock ing block with the nylon tooth brush moist-
ened with sol vent.
• Re move all loose foul ing from the ex te ri or of the barrel using a rag and cotton swabs.
Frame
• Gently scrub all in ter nal surfaces where carbon foul ing is present using the nylon
tooth brush moist ened with solvent. Con cen trate on the area normally cov ered by the
slide.
• Using a rag and cotton swabs, remove all loose fouling from all areas of the frame.
FUNCTiON CHeCK (Variant 7):
1. Perform Clearing Procedure (see above).
2. Place muzzle in a safe direction and rack the slide to rear three or four times in quick
succession. The Slide should not bind when traveling back and forth on the frame.
3. “DOUBLE ACTION”: With an unloaded pistol and the muzzle in a safe direction,
attempt to pull the trigger and hold to the rear. Hammer should fall.
4. With the trigger still held towards the rear, rack the slide and release. The hammer
should return to the up (half-cocked) position.
5. Pull the trigger to the rear and release. The hammer should return to the up (uncocked)
position.
FUNCTiON CHeCK (LeM Variant)
1. Perform Clearing Procedure (see above).
2. Place muzzle in a safe direction and rack the slide to rear three or four times in quick
succession. The slide should not bind when traveling back and forth on the frame.
3. Allow the slide go forward and completely go in to battery; the hammer should now be
in the half-cocked position.
4. “LEM”: With an unloaded USP and the muzzle in a safe direction, attempt to pull the
trigger and hold to the rear. Hammer should fall.
5. With the trigger still held towards the rear, rack the slide and release. The internal
hammer cocking piece should be caught by the sear as signified by a metallic click.
6. Release the trigger completely and re-engage trigger. Hammer should fall.
7. “Double Action”: With the hammer now in the uncocked (up) position, pull the trigger
to the rear and hold. Hammer should fall.
8. With the trigger still held towards the rear, rack the slide and release. The hammer
should be caught by the sear as signified by a metallic click.