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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On Sale
HK P2000SK Holster - Infidel Ultra Max
Comp-Tac
$71.95 - $80.95Comp-Tac HK P2000SK Infidel Ultra Max Holster The Infidel Ultra Max Holster is an Inside the Waistband Kydex and leather hybrid holster designed for concealed carry. The Infidel Ultra Max is designed with cant adjustment holes to allow the user to...HKP-19586-M$71.95 - $80.95 -
HK G28 Buffer Tube
H&K Heckler & Koch
$224.99HK G28 Buffer Tube / Receiver Extension New HK German buffer tube with the proper slot cut for use with the G28 stock. This is the factory correct part needed to get the full range and use of the G28 adjustable stock. Made in Germany by HK.HKP-16741$224.99 -
On Sale
HK P30SK Holster - Infidel Ultra Max
Comp-Tac
$75.95 - $84.95Comp-Tac HK P30SK Infidel Ultra Max Holster The Infidel Ultra Holster is an Inside the Waistband Kydex and leather hybrid holster designed for concealed carry. Created to be worn behind the hip at 4:00 or 5:00, this holster is a perfect easy on easy off...HKP-17518-M$75.95 - $84.95 -
On Sale
HK USP Mag Pouch - Single
Comp-Tac
Now: $33.95Was: $39.95Comp-Tac HK USP Single Mag Pouch The Comp-Tac single magazine pouch is an outside the waistband holder to carry a spare magazine for competition, concealed carry or general use. The Comp-Tac single magazine pouch provides a rigid material that is custom...HKP-17494Now: $33.95Was: $39.95 -
Out Of Stock
HK45 Compact, USP Compact, P30 Recoil Spring Washer Retainer
H&K Heckler & Koch
$9.95New HK German Recoil Spring Washer Retainer This is the retaining washer that holds the spring captive on the end of the recoil assembly and pushes against the recoil spring. Compatible With: All USP Compact models P2000 P30 HK45 HK45CHKP-01594$9.95 -
Out Of Stock
HK G36/SL8 Dual Optic Replacement Battery
$14.95HK G36 & SL8 Dual Optic Replacement Lithium Battery The proper battery with the proper voltage for all HK dual optic units. Please Note: Standard AA batteries WILL NOT work. You need this specialized battery for the optic to function...HKP-00009$14.95 -
HK MP5 Extractor - .40 S&W, 10mm, .357 SIG
H&K Heckler & Koch
$69.95H&K Heckler and Koch New Latest Production 1.4mm Extractor for HK MP5 .40, 10mm, .357 This is the latest and greatest upgraded extractor made by HK. This is also a great upgrade for the many out-of-spec clones out there. Compatible...HKP-00410$69.95 -
On Sale
HK UMP, USC Optic Rail - Picatinny
H&K Heckler & Koch
Now: $17.95Was: $19.95HK UMP, USC Optic Rail - Picatinny Factory HK UMP and USC Picatinny machined aluminum optic rail with mounting hardware. Compatible With: HK UMP, USCHKP-22541Now: $17.95Was: $19.95 -
HK90 Trigger Spring- 3 Position - SEF and Navy
H&K Heckler & Koch
$9.95H&K HK SEF & Navy 3 Position Trigger Spring Elevate your HK 90 series performance with a factory-fresh trigger spring, designed for both semi and full-auto models. These are an essential upgrade for any 90 series owner, ensuring optimal...HKP-22178$9.95 -
Out Of Stock
HK CC9 Backstrap - Large
H&K Heckler & Koch
$14.95H&K CC9 Large Backstrap Made in Germany by H&K, this CC9 large backstrap provides a larger grip profile for a custom fit. Compatible With: HK CC9HKP-22109$14.95 -
On Sale
Century Arms AP51 A3 Telescopic Stock
MKE
Now: $404.95Was: $449.95MKE Century Arms AP51 A3 Telescopic Stock Factory new MKE stock professionally converted to fit the AP51 rifles and pistols. This AP51 stock was modified to the correct length recoil rod to make it a true drop in stock. Only offered here at HK Parts...HKP-21926Now: $404.95Was: $449.95 -
HK MP5 Stock - Cheek Riser
HKP HK Parts / Strike Industries
$349.95Strike Industries HK MP5 Stock with Cheek Riser The Strike Industries Dual Folding Stock paired with the HKP MP5 picatinny adapter is one of the best options on the market for those looking for a light, compact folding stock configuration. The adjustable...HKP-21497-M$349.95