Parts
At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.
Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.
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HK UMP Magazine - 25 Round - LEO Marked - Used
H&K Heckler & Koch
$149.95German HK UMP .45 25 Round Magazine - Used Used PD trade-in factory 25 round magazines with HK factory-marked LEO markings. Condition of used parts will vary. All used parts are sold AS-IS. Compatible With: HK UMP .45 ACPHKP-17917$149.95 -
HK UMP, USC, G36, SL8 Index Plate
H&K Heckler & Koch
$9.95HK Index Plate For All UMP, USC, G36, & SL8 Lowers Compatible With: HK UMP HK USC HK G36 HK SL8HKP-01860$9.95 -
HK UMP, USC, G36, SL8 Notched Disk - S,F
$8.95HK Ratched Wheel, Notched Disk G36, SL8 0,1 (Safe & Fire) Only Compatible With: HK UMP HK USC HK G36 HK SL8 (0,1 or S,F only)HKP-19070$8.95 -
Out Of Stock
$69.95 -
HK33, HK53, HK93, HK91, G3 Bolt Locking Lever Axle Pin
H&K Heckler & Koch
$9.95HK Bolt Carrier Bolt Locking Lever Axle Pin - G3, 91, PTR & HK93, 33, 53 Brand new HK German bolt locking lever axle pin or cylinder pin for HK locking levers. Compatible With: G3, 91, PTR HK 93, 33, 53 HK21, 23, 11, 13 PSG1, MSG90HKP-17624$9.95 -
HK German Bayonet Adapter With Hardware
H&K Heckler & Koch
$159.95H&K German Bayonet Adapter With Hardware HK German Bayonet Adapter W/ Hardware made under a Turkish contract. The HK bayonet adapter replaces the cocking tube end cap (dust cap). Then the bayonet slides into the spring-loaded mechanism in the...HKP-00021$159.95 -
HK MP5 Locking Piece #25 - 60 Degree - High Impulse - .40 S&W, 10mm
H&K Heckler & Koch
$229.95New HK German MP5 40 or MP5 10mm High Impulse Locking Piece Marked #25 This is the 60-degree locking piece that is used for high-impulse ammo, commonly found in +P or +P+ ammo. This locking piece is needed to cycle these hot loads without excessive...HKP-00437$229.95 -
HK MP5, HK94 Complete Bolt Head - Used
H&K Heckler & Koch
$349.95 - $369.95H&K MP5 & HK94 Complete Bolt Head - Used Last call! These original HK German MP5 & HK94 bolt heads are now classified as restricted import items by HK making stock extremely limited. Date Code: IA - 1980 IB - 1981 IC - 1982 ID - 1983 IE -...HKP-01881-M$349.95 - $369.95 -
HK MP5, HK94, HK34 Barrel - 9mm - 16.5" - Non-Threaded
RCM
$264.95RCM MP5, HK34, HK94 9mm Barrel - Non-Threaded Each non-threaded barrel is hand-selected from the finest cold hammer forged steel (CHF) 41V45 barrel blanks. Expertly profiled and chambered in the desirable 16 flute chamber profile. Each barrel is finished...HKP-00927$264.95 -
HK USP9 Complete Magazine - 22 Round
HKP HK Parts / Heckler & Koch
$98.95HKP Complete 22 Round Magazine for USP9 Complete 22 round magazine for HK USP9 pistols. This magazine combines an HKP magazine extension with an original German Heckler and Koch magazine body to increase capacity to 22 rounds. Built for USP9 models and...HKP-22555-M$98.95 -
On Sale
HK MP5, 90 Series, AP5 Sear - Friction - SEF and Navy Trigger Packs
MKE
Now: $4.95Was: $8.95MKE AP5, MP5, 90 Series Friction Sear for SEF and Navy Trigger Packs Steel friction sear manufactured in Turkey for HK 90 Series trigger packs. Designed for use in SEF and Navy-style configurations, this component is commonly referred to as the catch...HKP-22521Now: $4.95Was: $8.95 -
Out Of Stock
HK VP9 Match Firing Pin - Complete
H&K Heckler & Koch
$69.95Heckler and Koch Complete Firing Pin for your VP9 Match Complete firing pin assembly including firing pin, sleeve, spring, and shell spring washers. Compatible With: HK VP9 Match HK VP9 HK HK VP9L HK VP9SKHKP-22320$69.95