HK45

The HK45 was developed as a product improvement of the highly regarded USP45, first released in the 1995. The Caliber .45 ACP HK45 includes several user-inspired enhancements including changeable grip panels (backstraps), a Picatinny MIL-STD-1913 accessory rail, better ergonomics, and more ambidextrous controls.

Along with the HK45 Compact, the HK45 was developed as a possible candidate for the Joint Combat Pistol (JCP) and Combat Pistol (CP) programs administered by the U.S. military in their search for a new service handgun to replace the 9-millimeter M9. These programs were suspended before completion and no pistols were selected.

The HK45 uses an HK proprietary O-ring barrel for precise barrel-to-slide lockup and optimal accuracy. HK45 barrels are made using the famous HK cold-hammer forging process for superior performance.

Using HK’s unique internal mechanical recoil reduction system reduces the recoil forces imparted to the weapon and shooter by as much as 30%, improving shooter control during rapid firing and increasing component service life. Capable of firing standard .45 ACP ball through +P ammunition, the HK45 combines the accuracy, modularity, reliability and minimum 20,000 round service life of the famed USP45 series with the improved ergonomics of the P2000 series pistols. HK45 models can be also be fitted with threaded barrels for use with muzzle mounted sound suppressors.

Each HK45 comes standard with an extra backstrap; medium and small interchangeable backstraps ensure an optimal fit for most shooter’s hands and complement the ergonomic profile grip.

An improved USP-style control lever, a combination safety and decocking lever, is frame mounted on the HK45 and is quickly accessible. The HK45 control lever has a positive stop and returns to the “fire” position after decocking.

By using the modular approach to the internal components first pioneered by HK on the USP, the control lever function of the HK45 can be switched from the left to the right side of the pistol to accommodate left-handed shooters (additional parts required). Left and right mounted control levers provide safety and/or decocking functions as required and can be fitted to the pistol simply by changing parts. For true ambidextrous use, a control lever can also be mounted on both sides of the pistol if required.

Well-suited for personal defense use, the HK45 is available in, or can be converted to, a wide variety of variants that use different trigger firing modes, including double action/single action (DA/SA) and DAO (double action only). The DAO mode uses the unique Heckler & Koch LEM (Law Enforcement Modification) firing system for improved double action trigger pull.

Key features and system characteristics:

  • Integral MIL STD 1913 (Picatinny) rail molded into the polymer frame dust cover for mounting lights, laser aimers, and other accessories
  • Ergonomic grip profiles with user replaceable grip panels to adjust the feel and grip circumference of the weapon to suit individual operator hand size and shooting preference
  • HK45 grip-to-slide angle matches Model 1911’s profile
  • Common high-capacity metal magazines with a capacity of 10 rounds (for both HK45 and HK45 Compact models).
  • Ambidextrous controls with dual slide releases and enlarged magazine release
  • Uses the proven modified Browning linkless recoil operating system
  • O-ring barrel for precise barrel-to-slide lockup
  • Polygonal rifling for longer barrel life and better accuracy
  • Improved ergonomic control levers (safety and/or decocking)
  • Low profile drift adjustable 3-dot sights
  • Contoured and radiused slide with forward slide (grasping) grooves and anti-glare longitudinal ribs

AVAILABLE CONFIGURATIONS

ID NumberUPC CodesDescriptionMSRP
HK45C (Compact) Pistols, .45 ACP - supplied with one additional backstrap
81000018642230261341HK45 Compact (V1) DA/SA, safety/decocking lever on left, two 8rd magazines849
81000019642230261358HK45 Compact (V1) DA/SA, safety/decocking lever on left, three 8rd magazines and night sights949
81000020642230261372HK45 Compact (V7) LEM, two 8rd magazines849
81000021642230261389HK45 Compact (V7) LEM, three 8rd magazines and night sights 949
HK45CT (Compact Tactical) Pistols, .45 ACP - supplied with threaded barrel, adjustable high profile sights and one additional backstrap
81000022642230261365HK45 Compact Tactical (V1) DA/SA, safety/decocking lever on left, two 10rd magazines1,029
81000024642230261396HK45 Compact Tactical (V7) LEM, two 10rd magazines1,029
HK45 Pistols, .45 ACP - supplied with one additional backstrap
81000026642230261273HK45 (V1) DA/SA, safety/decocking lever on left, two 10rd magazines 849
81000027642230261280HK45 (V1) DA/SA, safety/decocking lever on left, three 10rd magazines and night sights949
81000028642230261327HK45 (V7) LEM , two 10rd magazines 849
81000029642230261686HK45 (V7) LEM , three 10rd magazines and nights 949
HK45T (Tactical) Pistols, .45 ACP - supplied with threaded barrel, adjustable high profile sights and one additional backstrap
81000030642230261310HK45 Tactical (V1) DA/SA, safety/decocking lever on left, two 10rd magazines1,029
81000032642230261334HK45 Tactical (V7) LEM , two 10rd magazines 1,029
HK45 Spare Magazines
234269S642230244320USP45/HK45 Compact, 8rd magazine49
234268S642230244306USP45/HK45 Compact, 10rd magazine (Extends below the pistol frame)49
227710S642230244269HK45 10rd magazine49
HK45 Accessories
260204642230246485Universal LEM kit (Fits HK45, HK45T, HK45C, HK45CT, and all USP full size)139
241594642230244375HK45 Series ambidextrous safety lever kit59
226351642230253827HK45 Tactical threaded barrel, 5.11 inches, M16x1 LH339
226350642230252264HK45C Tactical threaded barrel, 4.57 inches, M16x1 LH259
708056R642230246409HK45/HK45C tritium night sights, green/green119
50970172642230255326HK45/HK45C/USP45/USP45C Tactical thread cap, M16x1 LH19

KEY FEATURES

TECHNOLOGY

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Cold Hammer Forged Polygonal Bore

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During the 1960s, Heckler & Koch perfected the famous polygonal profile barrel technology. Conventional lands-and-grooves rifling allow propellant gasses to escape around the front of the bullet as it is fired from the barrel muzzle. A polygonal bore profile effectively seals propellant gases behind the bullet—increasing bullet velocity. An added benefit of a polygonal barrel is its resistance to wear. A polygonal barrel will normally outlast a conventional “lands-and-grooves” barrel by thousands of rounds. Polygonal barrels were one of the many radical design elements used on the HK P7 series pistol and this same breakthrough technology is present on all current HK handguns.
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Reinforced Polyamide (Polymer) Frame

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A radical new material used on the P9S pistol in the late 1960s, advanced polymers were soon used as major components and assemblies on a variety of HK products — including the receivers of MP5s in the 1960s. HK polymer molding technology led to the introduction of another synthetic framed HK handgun, the futuristic-looking VP70. Heckler & Koch pioneered the use of polymers more than fifteen years before competing firms. Today, HK remains a technology leader in the use of innovative and high-strength polyamides.

MEDIA