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 MP7 Piston Ring
H&K Heckler & Koch
$9.95HK German MP7A1 Piston Ring For Gas Piston New HK German MP7 piston ring. A high wear & tear item. Works on all HK MP7 models. Each ring is sold individually. 3X are needed for each piston. We suggest ordering 3 and swapping them all at the same time.HKP-17426$9.95 -
HK P9S Series Recoil Spring
H&K Heckler & Koch
$39.95Factory German HK P9 & P9S Recoil Spring It is no longer supported or available from HK Germany. The P9 and P9S have been out of production for many years. Get a spare while we still have them in stock. Compatible With: HK P9 pistols in 9mm and ...HKP-02046$39.95 -
HK416, HK417, MR556, MR762 Detent Takedown Pin
H&K Heckler & Koch
$9.95H&K HK MR556/MR762/416/417 Detent Takedown Pin Factory H&K takedown pin for MR556 A4. Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-02540$9.95 -
Out Of Stock
HK Barrel Retaining Pin - 5.15mm
H&K Heckler & Koch
$14.95H&K Barrel Retaining Pin - 5.15mm This is the barrel pin used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel in the trunnion. Each pin is slightly oversized for...HKP-01662$14.95 -
HK P30 Tactical Magwell - Low Profile - Steel
HKP HK Parts
$74.95HKP HK P30 Tactical Low Profile Magwell - Steel Low profile, every day carry magwell for the HK P30 pistol. The low profile mag-well is designed for the average every day P30/P30L owner. That would like the enhancements and competitive advantage a...HKP-18544-M$74.95 -
HK MP5, MP5K Flash Hider - A2 Style - 3-Lug - 9mm
HKP HK Parts
$99.95MP5, MP5K Flash Hider - A2 Style - 3-Lug - 9mm Easily attaches to the end of any factory specification 9mm 3 lugged barrel. This flash hider does not require the of threads as it attached to the 3 lug tip. Also a great addition for any of 3 lug barrels...HKP-19520$99.95 -
HK45, HK45 Compact Magazine Spring - 10 Round
H&K Heckler & Koch
$6.95Heckler and Koch 10 Round Magazine Spring for HK45, HK45 Compact Factory German HK magazine spring for the 10-round HK45 and HK45 Compact magazines. Made from high-strength steel and designed to maintain proper feeding pressure for reliable function...HKP-01848$6.95 -
HK91, G3 Cocking Handle - Rubberized
H&K Heckler & Koch
$32.95HK German G3 & HK 91 Rubberized Cocking Handle - Newest Style A genuine Heckler & Koch part. This is the latest style cocking handle that replaces the standard plastic style cocking handle that chips, cracks, and eventually falls off. This new...HKP-00509$32.95 -
HK91, G3 Rear Sight Drum
H&K Heckler & Koch
$9.95HK German Rear Sight Drum .308/7.62 - New Compatible With: HK G3, 91, PTR91, PTR32 HK .308/7.62 models or clones Other HK 308 clones & variantsHKP-01660$9.95 -
HK VP9, VP40, P30, P30L, P2000 Mag Pouch - Twin Paddle
Comp-Tac
$77.95Comp-Tac HK VP9, HK VP40, HK P30/P30L, HK P2000 Twin Paddle Mag Pouch The Comp-Tac Twin Magazine Paddle pouch is an outside the waistband holder that carries two magazines attached together. Designed to be worn at 9:00 for a right handed shooter this is...HKP-18398$77.95 -
HK91, G3 SEF Navy Style Trigger Housing - Push Pin - USED EXELLENT
H&K Heckler & Koch
$49.95H&K G3/91 (7.62x51/.308) SEF Navy Style Trigger Housing - Push Pin - USED EXELLENT German made Heckler & Koch grip housing comes in black polymer. Accepts standard SEF or 0,1 style trigger packs & SEF longer axled selector levers. Priced to...HKP-18335$49.95 -
AR-15 Buffer Tube Castle Nut
Ergo
$9.99Ergo AR-15 Castle Nut For Buffer Tubes - US Made Steel Castle-nut for AR buffer tubes fits both mil-spec and commercial buffer tubes alike. Compatible With: HK MR556 & 416 AR-15 style platformsHKP-02729$9.99