Hk Usp 6mm Bb Airsoft Pistol Won't Fire

Hk Usp 6mm Bb Airsoft Pistol Won't Fire


Semi-automated pistol

Heckler & Koch USP
First-year H&K USP 9mm (32415150000) modified.jpg

Heckler & Koch USP9

Blazon Semi-automatic pistol
Place of origin Frg
Service history
In service 1993–present
Used by Run into Users
Production history
Designer Helmut Weldle
Designed 1989–1992
Manufacturer Heckler & Koch, EAS[ane]
Produced 1993–nowadays
Variants See Variants:
  • USP
  • USP Compact
  • USP Compact Tactical
  • USP Tactical
  • USP Expert
  • USP Match
  • USP Elite
  • USP Combat Contest
  • P8 Pistol
  • P10 Pistol
Specifications
Mass Without magazine:
  • 748 g (one.65 lb) (USP 9 mm/.forty)
  • 789 chiliad (1.74 lb) (USP .45)
  • 667 k (i.47 lb) (Compact 9 mm)
  • 694 g (1.53 lb) (Meaty .40)
  • 726 g (1.lx lb) (Meaty .45)
  • 771 chiliad (one.70 lb) (Tactical 9 mm)
  • 861 k (1.90 lb) (Tactical .40/.45)
  • 875 g (one.93 lb) (Expert .xl)
  • 848 g (one.87 lb) (Expert .45)
  • 1180 g (2.6 lb) (Match 9mm/.40/.45)
Length
  • 194 mm (7.64 in) (USP ix mm/.40)
  • 201 mm (7.87 in) (USP .45)
  • 173 mm (6.81 in) (Compact 9 mm/.40)
  • 219 mm (8.64 in) (Tactical .twoscore/.45)
  • 224 mm (8.81 in) (Proficient .forty)
  • 240 mm (9.45 in) (Friction match)
Barrel length
  • 108 mm (4.25 in) (USP 9 mm/.40)
  • 112 mm (four.41 in) (USP .45)
  • 91 mm (iii.58 in) (Meaty nine mm/.40)
  • 97 mm (three.80 in) (Compact .45)
  • 121 mm (4.78 in) (Tactical 9 mm/.xl)
  • 132 mm (5.19 in) (Expert .40/.45)
  • 153 mm (vi.02 in) (Elite)[2]
  • 153 mm (6.02 in) (Friction match)

Cartridge
  • 9×19mm Parabellum
  • .357 SIG (Compact only)
  • .40 S&W
  • .45 ACP
Action Short recoil, DA/SA, DA/DAO
Rate of fire Semi-automatic
Effective firing range 50 grand (9×19mm Parabellum), thirty grand (.45 ACP)
Maximum firing range 100 1000
Feed arrangement Detachable box mag; capacities:
USP:
  • 15 rounds (9×19mm)
  • 13 rounds (.twoscore S&W)
  • 12 rounds (.45 ACP)

Friction match, Skillful

  • 18 rounds (ix×19mm)
  • xvi rounds (.twoscore Southward&W)
  • 12 rounds (.45 ACP)

Meaty

  • 13 rounds (9×19mm)
  • 12 rounds (.357, .40 Due south&Due west)
  • 8 or 10 rounds (.45 ACP)
Sights
  • Patridge, "3-dot" blazon; adjustable rear on Tactical, Lucifer and Expert

The USP (Universelle Selbstladepistole or "universal cocky-loading pistol") is a semi-automatic pistol developed in Germany by Heckler & Koch GmbH (H&K) of Oberndorf am Neckar as a replacement for the P7 series of handguns.

History [edit]

Design work on a new family unit of pistols commenced in September 1989, focused primarily on the U.s.a. commercial and law enforcement markets. USP prototypes participated in rigorous testing alongside H&K's entry in the Offensive Handgun Weapon System (OHWS) programme requested by the U.South. Special Operations Control (USSOCOM), which would later result in the Mk 23 Mod 0.[three] The USP prototypes were then refined in 1992, based on input from the OHWS trials, and the design was finalized in December of the aforementioned yr. The USP was formally introduced in January 1993[3] with the USP40 model (the base version) chambered for the increasingly popular .twoscore Due south&W cartridge, followed before long by the USP9 (using the 9×19mm Parabellum cartridge), and in May 1995—the USP45 (caliber .45 ACP).[3] In contrast to the ambitious and innovative P7, P9S, and VP70Z designs, the USP uses a more conventional Browning-style cam-locked action, similar to that used in the How-do-you-do-Power, but with a polymer frame.[iii] [four] [5]

Design details [edit]

The USP is a semi-automatic pistol with a mechanically locked breech using the short recoil method of operation. This rather conventional lock-up system has a large rectangular lug over the butt's chamber that rides into and engages the ejection port cutting-out in the slide. When a cartridge is fired, pressures generated past the ignited powder drive the cartridge casing back against the breech face up on the slide, driving back both the butt and slide equally they remain locked together in the fashion described above. After three mm (0.12 in) of unrestricted rearward travel, the projectile leaves the barrel and the gas pressures drop to a safe level. A shaped lug on the underside of the barrel bedroom comes into contact with a hooked locking cake at the terminate of the steel recoil spring guide rod, lowering the rear stop of the barrel and stopping the barrel'due south rearward movement. The recoil spring assembly is held in place past the slide stop lever'southward axis pin and a circular cut-out at the front of the slide. For enhanced reliability in high-dust environments, the locking surface on the front top of the barrel's locking lug is tapered with a forward slope. This tapered surface produces a camming activity which assists in positive lock-upward in the presence of heavy fouling and debris.

I of the distinguishing features of the USP is the mechanical recoil reduction system. It consists of a short additional spring located within the main recoil spring on the breech end of the recoil spring associates. Designed primarily to reduce wear on the pistol's components, the system also lowers the top recoil forces felt by the shooter. The design with two springs allows the arrangement to piece of work with dissimilar kinds of armament without requiring any adjustments. Unlike similar systems employed in other guns, the USP blueprint does not incorporate a hydraulic damper and requires no maintenance. Using a similar recoil reduction system, the H&K Mk 23 pistol fired more 30,000 high pressure (+P) cartridges and 6,000 proof loads without damage or excessive article of clothing to any major components. Corruption and part-testing of USPs accept seen more than 20,000 rounds of .40 South&Westward fired without a component failure. MILSPEC environmental tests were conducted in high and depression temperatures, in mud, immersed in water and in table salt spray. In 1 particular exam, a bullet was deliberately lodged in the barrel and another bullet was fired to articulate the obstruction. The butt was successfully cleared with only minor structural deformation and continued to produce consistent groups when test fired for accuracy. The recoil reduction system is not nowadays on the USP Compact models, which instead use a simple polymer bushing as a buffer to reduce slide on frame bear upon.[6]

Major metallic components on both the USP and Special Operations Pistol are corrosion-resistant. Outside metal surfaces such equally the steel slide are protected past a proprietary "Hostile Surroundings" nitride finish.[7] Internal metal parts, such as springs, are coated with a Dow Corning anti-corrosion chemical to reduce friction and habiliment.[8] [ self-published source ]

The USP is equanimous of a total of 54 parts and is broken downward into 7 major components for maintenance and cleaning: the barrel, slide, recoil spring, recoil spring guide rod, frame, slide stop and magazine. This is done by retracting the slide back to align the slide stop centrality pivot with the disassembly notch on the left side of the slide and withdrawing the axis pin.

Variants [edit]

The USP was originally built around the .40 S&W cartridge, simply a 9×19mm Parabellum was introduced at the same time. In May 1995, Heckler & Koch introduced a .45 ACP variant. The USP Compact serial was introduced in 1996 and is bachelor in nine mm Parabellum, .40 S&W, .45 ACP, and, exclusively to the Meaty model, .357 SIG. Other variants of the standard USP include the USP Tactical, USP Adept, USP Match, USP Aristocracy and the standard sidearm of the German War machine (Bundeswehr)—the P8. The USP Tactical .45 ACP variant is as well in limited use by the Bundeswehr, designated as the P12.

One of the unique features of the USP is the wide multifariousness of the trigger styles available, which may be quickly swapped. There are nine commercially bachelor modifications (chosen "variants" by HK).[5] [7]

Past using a modular approach to the internal components,[4] the control functions of the USP can be switched from the left to the right side of the pistol for left-handed shooters. The USP tin can also exist converted from one type of trigger/firing mode to another. This includes combination of double-action and single-action (DA/SA) and double-action only (DAO) modes.[seven]

In add-on to a wide pick of trigger/firing modes, the USP has an ambidextrous magazine release lever that is shielded by the trigger baby-sit from inadvertent actuation. The rear of the USP grip is stepped, and combines with the tapered magazine to let for rapid reloading. Finger recesses in the grip frame besides aid in mag removal. On 9 mm and .40 caliber USPs, magazines are constructed of polymer reinforced with stainless steel. Magazines on the USP45 are all-metal. All USP magazines will drop free of the pistol frame when the magazine release is depressed. Likewise, the USP does non have a mag lockout feature (as well known every bit a magazine disconnector). Thus, information technology is possible to fire a chambered circular even with the magazine removed. An extended slide release lever is positioned to allow easy operation without changing the grip of the shooting mitt.

Variants 1 and 2 (double action/single activity, decocking and safety lever)
Variants one (lever on left) and ii (lever on right) permit the user to carry the pistol in a single-activity fashion (cocked and locked) with the manual rubber engaged. This same pistol, without modification, tin be carried in double-activity mode, with or without the transmission prophylactic engaged, and with the benefit of a decocking lever.
Variants 3 and 4 (double action/unmarried action, decocking lever, but no safety)
Variants 3 (lever on left) and 4 (lever on right) provide the user with a frame-mounted decocking lever that does non have the "safety" position. This combination simply allows the hammer to exist lowered from SA position to DA position. Information technology does not provide the "safe" position to prevent the pistol from firing when the trigger is pulled.
Variants 5 and vi (double action only, with safe lever)
Variants five (lever on left) and 6 (lever on right) operate as double-action-only pistols, with a bobbed hammer always returning to the DA position (forrard) subsequently each shot is fired. To fire each shot, the trigger must be pulled through the smooth DA trigger pull. Variants 5 and 6 take a manual safe lever.
Variant vii (Constabulary Enforcement Modification, no control lever)
Developed for the U.S. government, the Police Enforcement Modification (LEM) is a double-action merely model with a unique trigger mechanism. This mechanism improves the double-action trigger performance and reduces the weight of the double-action trigger pull to 8 pounds-force (36 N), uses a stronger hammer spring, and shortens the trigger reset.
Variant 8
Never produced.
Variants 9 and x (double-action/single-action, safety lever, but no decocker)
Variants 9 (lever on left) and 10 (lever on right) allow the shooter to behave the pistol in a unmarried-action mode (artsy and locked) with the transmission safe engaged. This same pistol, without modification, can be carried in double-activeness mode (hammer down), with or without the manual safe engaged. The double-activeness manner offers a 2nd-strike/double-action capability in case of a misfire. The control lever has no decocking function on variants 9 and x, and so 1 would accept to lower the hammer manually (or keep the safety on, remove the magazine, and squirt any circular in the chamber before lowering the hammer).

USP Custom Sport [edit]

Virtually identical to the standard USP, the Custom sport is aimed at target and applied shooting users. The Custom Sport has a match grade barrel, lucifer trigger and adjustable sights.

USP Compact [edit]

The first USP Meaty models appeared in 1996. These are scaled-down USPs, and are bachelor in all the same cartridges as the full size version, and additionally the .357 SIG. Due to the smaller size of the frame, magazines for the Compact variant may take a handgrip extension to improve suit the shooter's hand. Standard flat floorplates are also available for the USP Compact magazines. The USP Compact comes standard with a bobbed hammer equipped with a flat rubber external thumb grip. This reduces possible snag from the hammer on a holster or clothing while the pistol is existence drawn, only still allows the USP Meaty to be cocked from a decocked position fifty-fifty in the absence of a spurred hammer. This can exist done since decocking the weapon does non fully driblet the hammer, leaving it in a somewhat "half-artsy" country.

The USP Meaty cannot be cocked from a dry-fired position as the hammer will be flush to the back of the slide. However, the operator could pull the trigger approximately halfway back in a dry-fired position to put the hammer in a half-cocked state, allowing the hammer to exist fully cocked with the thumb. The P10, designed for German war machine and law units, is a USP Meaty with the addition of a spurred hammer. This hammer can also be installed onto a normal USP Compact. In improver to the variants previously described for the total size USP, an ambidextrous safe is available from the manufacturer equally a separate part. After installation, the USP Meaty effectively becomes a correct or left-handed firearm with respect to the decocker and manual safety functions. Heckler & Koch do not produce quotient conversions, but barrels for .357 SIG and .forty Due south&Due west are available from HK and from third-political party manufacturers.

USP Tactical [edit]

The USP Tactical (9mm Parabellum, .40 S&Westward, .45 ACP) incorporates fully adaptable suppressor peak sights, an extended, threaded butt with O-ring, and a lucifer form trigger with adaptable trigger end. Prior to 2015, there was no USP Tactical model in 9mm. Instead, HK offered the regular "USP9" variant with an extended, threaded butt and suppressor height sights every bit the "USP9SD" model.[9] Sound suppressors designed for the USP Tactical are available from Brügger & Thomet and Knight'south Armament. A unique characteristic of the USP Tactical is that the barrel is left-hand threaded (counter-clockwise to tighten), which makes the pistol incompatible with suppressors designed for the MK23 Mod 0.[x]

The KSK of the German Army and the German Navy Kampfschwimmer utilise the USP Tactical nether the designation "P12".[3]

USP Compact Tactical [edit]

HK USP Compact Tactical .45 ACP equipped with a SureFire flashlight

The USP45CT Compact Tactical is a .45 caliber handgun adult for U.S. special operations. It incorporates features of the full-size USP45 Tactical pistol, just is more concealable. Features include an extended, threaded O-ring barrel with polygonal bore profile and suppressor height sights, which may limit the apply of holsters designed for standard USP Compact pistols. The USP CT is available in .45 ACP but.[11]

USP Expert [edit]

HK USP Elite and Skilful 9mm with Merkle Tuning weights

USP Expert .45 V1 with cartridge loaded backwards in magazine

The USP Expert (nine mm Parabellum, .xl S&W, .45 ACP) was introduced in 1998, and includes all the features of the Tactical, but instead of the extended barrel being threaded and protruding from the slide, the Expert uses a longer slide to conform the extended butt. The larger slide adds weight to assistance reduce cage flip and felt recoil. The Expert has adjustable target sights like to the USP Lucifer, Elite and Tactical, just as on the Elite, the dovetail of the rear sight is lowered into the frame. The Expert may exist used with an extended mag well, or jet funnel, in 9 mm and .xl South&W calibers. These are used with larger-capacity magazines. The Jet Funnel magazines are opaque plastic and hold 18 rounds for 9mm and 16 rounds for .40 Due south&W. The jet funnel mag can be used without the jet funnel installed, in which case they volition protrude slightly from the bottom of the magazine well. However, when the jet funnel is installed, only jet funnel magazines can exist used, as the standard USP magazines are at present too brusk to lock in identify. The bobbed hammer was a manufactory choice for the Proficient if it was to be used in IPSC for the Standard Division because the original version "in its gear up status" did not fit the box for Standard partitioning in IPSC.

USP Match [edit]

The USP Lucifer (9 mm Parabellum, .xl S&Westward, .45 ACP) has the same features offered on the Expert, except for a butt weight that replaces the elongated slide constitute on the Expert. This weight is said to provide a recoil counterbalance to aid in target tracking.[ commendation needed ] It was discontinued in 1999.

Highly Modified USP 45 by Adam Rogers.

USP Elite [edit]

The USP Elite (9 mm Parabellum, .45 ACP) combines the characteristics of the Practiced with a 6.02 in (153 mm) barrel[2] and a hand-fitted 9.25 in (235 mm) extended slide. The model was designed every bit a target pistol and has not been adopted past whatsoever police-enforcement bureau or war machine organization.

Equipment [edit]

The USP has an accompaniment track at the front of the frame for attachments of aftermarket equipment such as laser sights and weapon lights. The runway is a proprietary pattern, and the number of accessories available is extremely express. Aftermarket adapters providing a standard Picatinny rail are available for both USP and USP Compact models.

Testing [edit]

The USP was developed at the same time equally the SOCOM MK23; the pistol underwent much of the aforementioned testing. The barrel is cold-forged from chromium steel for increased service life. USP barrels after November 1994 use a polygonal profile; 1994 and earlier models use traditional 'land and grooves' rifling. During testing, a bullet was deliberately lodged in a USP barrel. Another cartridge was so fired into the obstructing bullet. The second bullet cleared the barrel, resulting in a barely-noticeable burl. The pistol was and then fired for accurateness, and the resulting grouping measured less than four inches at 25 meters.[12]

Temperature testing required the USP be frozen to −42 °C and fired, frozen again, then be heated to 67 °C and fired. These temperature tests were continually repeated with no adverse effects on the USP.[12]

The gun was likewise subjected to NATO MILSPEC mud and pelting tests; it passed without difficulty. H2o immersion and salt spray as well presented no issues. German Navy gainsay defined used the USP for years without any signs of corrosion.

Condom testing exceeded the ANSI/SAAMI requirements adopted in May 1990. These included dropping a USP with a primed cartridge and decocked hammer on a variety of difficult surfaces without discharging. The USP surpassed these commercial requirements, as well as German Army and police tests, including repeated drop tests from six anxiety (1.eight one thousand), hammer commencement, onto a steel backed physical slab. Proof round firing resulted in no cracks, deformations, or increase in head infinite. Attempts to fire the USP pistol with an unlocked breech proved unsuccessful.

Testing with a variety of armament proved the USP meets these loftier standards. During the USP testing phase, the recoil-reduction system reduces the forcefulness on the USP grip to approximately 300 newtons (67 pounds-force). Peak force shock on competing .40 quotient polymer and metal framed pistols was around 5,000 newtons (1,100 pounds-forcefulness). The principal benefit of low tiptop shock is a decrease in habiliment and tear on pistol components, a slap-up concern with the +P cartridge in nine mm, .twoscore S&West, and .45 ACP. Reduction of peak shock forces besides contributes to softer recoil for the shooter, although these "felt recoil" values are subjective.

Service [edit]

The USP was adopted in Germany by the Bundeswehr (German language armed forces) equally the P8 in 1994.[13] The P8 has small differences from the standard USP model: translucent magazines, a reversed safe/decocker lever (on the P8, downwardly indicates 'safe', and up indicates 'burn' — the contrary of the standard USP), and the 'S' and 'F' letters are printed onto the frame instead of onto the lever. The P8 has a traditional lands-and-grooves butt instead of a polygonal barrel.[14]

The P10, adopted past many German language Country Law forces, is a USP Compact with the addition of a spurred hammer.[15] Both the P8 and P10 are chambered in 9×19mm Parabellum (9mm NATO) merely.[fourteen] [15]

In 1998, the H&1000 USP Meaty with the LEM trigger activity, in .40 South&Westward, was adopted by the United States Immigration and Naturalization Service as the duty sidearm for its Special Agents and plainclothes officers. In 2004, after the I&NS's criminal investigations branch merged with the U.S. Customs Service's Office of Investigations into the U.S. Department of Homeland Security's Homeland Security Investigations, the former I&NS Special Agents continued to carry the USP Compact. New duty pistols, the SIG Sauer Model P229 DAK, in .xl S&W, were somewhen issued to the HSI Special Agents afterwards new pistol contracts were awarded by the DHS.[sixteen]

On August 24, 2004, SIG Sauer and Heckler & Koch/HK Defense won major pistol contracts with the Us Department of Homeland Security. The contract was valued at $26.2 1000000.[17] The HK pistol models chosen were the HK P2000 US, HK P2000 SK Subcompact, and the USP Compact/LEM (Law Enforcement Modification).[xviii] The LEM trigger is HK's version of SIG's DAK trigger, and vice versa. According to the company, the LEM trigger allows for faster follow-up shots (repeat shots) on target than a standard double-activity-only organization. This is due to a lighter trigger pull (vii.3–8.v lbf) and shorter trigger reset than standard DAO trigger systems. The LEM trigger uses a two-piece "pre-artsy hammer" composed of a cocking piece and an external hammer. The hammer is pre-cocked as a round is chambered (slide is cycled). The LEM organization supposedly besides provides reliable primer ignition, since information technology uses a stronger hammer leap.

The LEM trigger can be installed on existing USP Meaty pistols acquired earlier the LEM trigger came on the market place—either past a certified gunsmith or by sending the pistol to Heckler & Koch. In addition, the USP Compact pistol can retain its external safety with the LEM trigger—making it the only modified double-action pistol with an external safety.

Users [edit]

Country Arrangement name Model Caliber Reference
Commonwealth of australia Australian Federal Law Air Security Officers USP Tactical 9mm [3] [xix]
Western Australia Police Tactical Response Group USP Tactical .45 ACP[20] [21]
Australian Army Special Operations Command USP Tactical 9mm[22] [3] [23] [24] [25]
Queensland Police force Special Emergency Response Team USP Tactical .45 ACP [3] [26] [27]
Victoria Police Special Operations Group USP Tactical .45 ACP [3] [28]
Kingdom of denmark Danish Police USP Compact 9 mm [iii] [29] [30]
Jægerkorpset of the Royal Danish Army USP9 SD 9 mm [3] [31]
Egypt Central Security Forces Sa'ka Forces

Unit 777

- [32]
Estonia Estonian Armed Forces USP 9 mm [iii] [33]
French republic French Navy (PA HK Marine) USP Meaty - [3] [34]
Recherche Aéroportée et Actions Spécialisées (RAPAS) USP Tactical - [3] [35]
Frg Bundeswehr P8
USP Tactical (P12)
9mm (P8), .45 ACP (P12) [3] [13]
Landespolizei USP Compact (P10) 9mm [three] [36]
Georgia Georgian Armed Forces USP 9 mm [37]
Greece Hellenic Coast Baby-sit USP Compact 9mm [3] [38]
Hellenic Police USP Meaty 9mm [three] [38]
Ireland Defense force Forces USP family 9mm [3] [39] [twoscore]
Japan Japanese Special Forces Group - - [41]
Libya - .40 S&W
.45 ACP
[32]
Lithuania Lithuanian War machine - 9mm [3] [42]
Luxembourg Unité Spéciale de la Police of the Yard Ducal Police force - - [iii] [43] [44] [45]
Malaysia Pasukan Gerakan Khas (PGK) of the Majestic Malaysia Police USP Compact
USP Tactical SD
9mm [3] [46]
Royal Malaysia Police divisions in States of Sabah and Sarawak USP Meaty [iii]
Malaysian Immigration Department
Grup Taktikal Khas (GTK) of the Malaysian Immigration Section
RELA Corps
Norway Forsvarets Spesialkommando [47]
Poland Grupa Reagowania Operacyjno-Manewrowego (GROM) of the Polish Special Forces USP family - [3] [48]
Portugal Portuguese Air Strength USP family unit 9mm [3] [49]
Serbia Special Brigade USP 9mm [l]
Singapore Special Operations Command of the Singapore Law Strength USP Compact - [3] [51]
Due south Africa Southward African Police Service Special Chore Forcefulness USP
USP Compact
9mm [iii] [52]
Spain Castilian Armed Forces - - [3] [23]
Grupo Especial de Operaciones (GEO) of the Cuerpo Nacional de Policía USP Meaty - [3] [53]
Guardia Ceremonious USP Compact - [three] [54]
Basque Country ▶ Ertzaintza USP Compact 9 mm [55]
Ukraine Special Group "Alpha" of the Security Service of Ukraine USP ix mm [56]
U.s. Federal Flight Deck Officer (FFDO'south) USP40c/LEM .40S&W [57]
Maine Land Police USP45 .45 ACP [iii] [58]
Santa Monica Law Department in California USP45
USP9
.45 ACP
9mm
[3] [59]
Immigration and Naturalization Service USP Meaty/LEM .40S&West [16]

Gallery [edit]

References [edit]

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  6. ^ pp253.
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  16. ^ a b Former I&NS Special Agent
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Bibliography [edit]

  • Kokalis, Peter (2001). Weapons Tests And Evaluations: The Best Of Soldier Of Fortune. Bedrock, Colorado, United states: Paladin Press. ISBN978-1-58160-122-0.

External links [edit]

  • Manufacturer'southward website
  • Operator's manual
  • Modern Firearms
  • HKPro.com
  • H&K USP .45 pictorial

Hk Usp 6mm Bb Airsoft Pistol Won't Fire

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