Heckler And Koch HK USP Compact Pistol Operators Manual
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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 meet the operational magazine lock-out device. CAUTION All USP models will fire if the magazine is re- moved, a cartridge is in the chamber, and the trigger is pressed (with the control lever in the FIRE position if applicable). To reduce barrel wear, all USP Compacts have polygonal cold hammer-forged barrels. This feature not only ensures longer barrel life and easier bore cleaning, but produces a better gas seal behind the bullet for increased muzzle velocity. The HK USP Compact, like the large frame 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 Compact is a reliable and trouble-free pistol. An abbreviated set of universal mounting grooves for installing accessories is molded in the polymer frame of the USP Compact. These grooves allow a variety of accessories and targeting devices, such as the Mark II
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 optional tritium Total Length180 mm (7.09 in.) 173 mm (6.81 in.) 173 mm (6.81 in.) 173 mm (6.81 in.) Barrel Length96.4 mm (3.80 in.) 91 mm (3.58 in.) 91 mm (3.58 in.) 91 mm (3.58 in.) Sight Radius143 mm (5.63 in.) 136 mm (5.35 in.) 136 mm (5.35 in.) 136 mm (5.35 in.) Twist Length406 mm (15.98 in.) 378 mm (14.88 in.) 378 mm (14.88 in.) 250 mm (9.84 in.) _________________________________________________________________________________________________________________Height (Total)128.5 mm (5.06 in.)127mm (5.00 in.)127 mm (5.00 in.) 127 mm (5.00 in.) Width of Slide29 mm (1.14 in.) 29 mm (1.14 in.) 29 mm (1.14 in.) 29 mm (1.14 in.) Width of Frame (includes safety lever)34 mm (1.34 in.) 34 mm (1.34 in.) 34 mm (1.34 in.) 34 mm (1.34 in.) Weight (with empty magazine)795 grams (28.04 oz.) 780 grams (27.51 oz.) 780 grams (27.51 oz.)750 grams (26.46 oz.) Weight of Empty Magazine 87 grams (3.07 oz.) 83 grams (2.92 oz.) 83 grams (2.92 oz.) 83 grams (2.92 oz.) Slide Force (to retract slide)8.5 kg (18.74 pounds) 8.5 kg (18.74 pounds) 8.5 kg (18.74 pounds) 8.0 kg (17.64 pounds) _________________________________________________________________________________________________________________Trigger Travel (rest to hammer release)Single-action5 mm (.20 in.) 5 mm (.20 in.) 5 mm (.20 in.) 5 mm (.20 in.) Double-action11.5 mm (.45 in.) 11.5 mm (.45 in.) 11.5 mm (.45 in.) 11.5 mm (.45 in.) Trigger Reach (center of trigger to back of frame)Single-action67.5 mm (2.66 in.) 65 mm (2.56 in.) 65 mm (2.56 in.) 65 mm (2.56 in.) Double-action74.5 mm (2.93 in.) 72 mm (2.84 in.) 72 mm (2.84 in.) 72 mm (2.84 in.) Magazine Capacity (no cartridge in chamber)8 cartridges 12 cartridges* 12 cartridges* 13 cartridges*
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 Compacts are short recoil operated. They use a modified Browning style system, without a link, to lock and unlock the barrel. Upon firing, the pressure developed by the propellant gases forces the slide and barrel assembly to the rear. After moving approximately 3mm, the locking block will stop the rearward movement of the barrel. The barrel is pulled downward due to the engagement of the angled locking surfaces of the locking block with those located SECTION 3 FUNCTION AND OPERATION WARNING Always clear the pistol before handling it. Clearing the Pistol The HK USP Compact pistol is not considered “clear” or safe unless: 1. The control lever (if applicable) is on “SAFE” and; 2. The magazine is removed from the pistol and; 3. The slide is locked to the rear and; 4. The chamber is free of brass or ammunition To Clear the HK USP Compact: 1.Make sure fingers are outside of the trigger guard and the pistol is pointed in a safe direc- tion at all times! 2. Engage control lever (if applicable) - press the safety lever upwards until the “S” aligns with the reference line located on the frame. 3. Remove magazine- depress the magazine release lever and remove the magazine from the pistol. 4. Open and lock slide- while pointing the pistol in a safe directionlock the slide open by pulling the slide rearward as you press the slide release upward. Watch for a cartridge or empty case to be ejected from the pistol.
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 forward, stripping the next cartridge from the magazine into the chamber. If the magazine is empty, the magazine follower lifts the slide release into position where it can stop the forward progress of the slide and holds the slide open. If a cartridge is present in the magazine, the slide will push the cartridge from the magazine and into the chamber. WARNING Do not rely on the slide position to determine if the magazine is empty. Always check visually and physically ensure the pistol is not loaded.During the last 3mm of forward movement, the slide forces the angled surfaces of the barrel locking block against opposing angled surfaces on the recoil spring guide rod. This action pivots the locking block on the barrel up into engagement with the ejection port on the slide. The breech is now locked closed and the next shot can be fired. CAUTION A pair of Universal Mounting Grooves located on the front of the USP Compact’s frame allows for a variety of accessories to be used with the pistol. Improperly designed or installed acces- sories may result in damage to the mounting grooves and/or the pistol. Such damage is not covered under warranty. Be certain to use only HK authorized accessories and follow installa- tion and precautions carefully.
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 cartridge. All subsequent cartridges will be fired in the single-action mode because the slide automatically recocks the hammer after each shot is fired. In the double-action only mode, the hammer always returns to the uncocked (forward) position after each shot. All shots are fired in the double-action mode. Magazine - USP Compact magazines are constructed of metal with polymer floor plates, followers, and locking plate pieces. Cartridges are positioned within the magazine in a staggered arrangement but are fed intothe pistol from a single row under the feed lips. The cartridges are visible through the numbered viewing holes located in the back of the magazine. For maintenance and cleaning, USP Compact magazines can be easily disassembled. Control Lever - For Variants 1, 3, 5, & 9, this manually operated lever is located on the left side of the frame (for Variants 2, 4, 6, &10 the control lever is positioned on the right side of the frame) below the rear sight. This lever is operated with the firing thumb and can perform both functions of a safety lever and a decocking lever, depending on the parts installed. Note: Not all variants have a control lever. Control lever as a safety lever - On HK USP Com- pacts with the “SAFE” position (Variants 1, 2, 5, 6, 9, & 10), the front of this lever is fully raised above horizontal so that the “S” on the lever itself aligns with the reference line on the frame. (See Figure 17A ) With this control lever engaged, the release of the hammer is blocked in the single-action mode of fire. In the double- action mode, the hammer will partially cock but will not release to fire the pistol.
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 control lever cannot be raised above horizontal and the pistol will fire anytime the trigger is pulled with a cartridge in the chamber. The control lever only functions as a decocking lever to lower the cocked hammer into the double-action mode. The cocked ham- mer is lowered when the control lever is fully depressed by the operator (see Figure 17C). This lever is spring actuated and springs back up into the horizontal (fire) position when released. “DECOCKING” the control lever with a down- ward sweep of the thumb Control lever in SAFE position Control lever in FIRE position
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 the control lever in the safe position. Extractor - The extractor of the HK USP Compact pis- tol acts as a loaded chamber indicator. When a cartridge is in the chamber, the red colored forward edge of the extractor protrudes approximately 1 mm from the slide and is visible to the operator. Slide Release - This lever is located on the left side of the frame directly above the trigger. This lever is used to lock the slide open, to release the slide, and to disassemble the pistol. As a slide stop, it is lifted upward by the magazinefollower or the operators finger as the slide travels rearward during recoil or manual manipulation. The slide release engages in the recess located on the left side of the slide at it’s midpoint. The slide release is spring actuated and is held down out of engagement with the slide until required. The slide release will automatically hold the slide open when the last shot is fired. As a disassembly lever, the slide release is removed from the left side of the frame when the slide is held partially rearward. Magazine Release Lever -This ambidextrous, spring actuated lever holds the magazine in place within the grip by engaging in the notch found on the front of the magazine housing. Depressing this lever downward with the firing index fin- ger or thumb will allow the magazine, regardless of the number of cartridges inside, to drop free of the frame. The magazine release lever is shielded from accidental actuation by the design of the polymer frame and flared trigger guard surrounding it. Frame - All sides of the polymer frame are textured to ensure a firm grip, even with wet hands or under condi- tions of rapid fire.
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. The serial number of the pistol is engraved in the metal insert incorporated into the front of the frame in front of the trigger guard, on the left side of the slide, and on the barrel locking block. Sights - The USP Compact uses the proven 3-dot sighting arrangement. By aligning all three dots horizontally on the target, with the front sight dot centered between the rear sight dots, the operator can quickly and easily en- gage the target with a high degree of accuracy (Figure 19). With the optional tritium sights installed, precise and rapid target engagements are possible under low light conditions as well. The rear sight can be adjusted for windage by drifting the sight to the left or to the right, depending on the desired shot placement. Bullet impact on target will move in the same direction that the rear sight is moved. Be careful not to damage the slide finish when adjusting the rear sight. Adjustments for elevation are accomplished by ex- changing the front sight with a higher or lower sight, available from HK. The height of the front sight is indi- cated on the underside. The front sight must be removed by using a drift punch or an HK USP sight pusher. The accessory HK sight pusher can be used to install, remove, and adjust the front and rear sights on all USP and USP Compact pistols. To raise the bullet impact on target, a shorter front sight is installed. To lower the bullet impact on target, a taller front sight is installed. Installing the next higher or lower front sight will change the point-of-impact 2 inch- es at 25 meters, depending on the ammunition used. USP Compacts are function fired and zeroed at the factory at 25 meters, point-of-aim, point-of-impact. Your actual zero may vary depending on the ammunition used and/or your style of shooting. Figure 19
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 (i.e. some NATO spec. cartridges), a special hammer spring is available. The following guidelines should be considered when selecting the correct ammunition for your pistol. 1. Be sure the ammunition you have chosen is compatible with your pistol – proper caliber, cartridge, bullet weight, etc. Caliber markings on the USP Compact appear on the left side of the slide and on the barrel locking block, visible through the ejection port on the right side of the slide. 202. Prior to loading the magazine and chamber, carefully inspect all cartridges for the following abnormalities: • Cracked, split, dirty or corroded cases • Improperly seated projectiles and/or primers • Damaged projectiles 3. Do not attempt to fire a cartridge in which the projec- tile has been forced back into the case. Upon firing, this condition may result in increased chamber pressure above safe limits. 4. Do not fire ammunition through the pistol that: • Is foreign and/or outdated military surplus • Is assembled with corrosive primer and/or propellant • Is exposed to oil, grease, water, or direct sunlight. Remove contaminants if possible before use and cool down ammunition exposed to direct sunlight or heat. (Exposure to sources of heat could raise the chamber pressure of the cartridge above safe limits.) • Is loaded specifically for use in submachine guns.