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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HK416 Retractable Buttstock - Factory
H&K Heckler & Koch
$129.95HK 416 & AR15 6 Position Retractable Stock New HK Marked 6 position AR15 commercial stock. This stock fits all commercial AR-15/M16 buffer tubes. The stock telescopes expands and retracts to 6 locked positions. Marked with the HK logo and...HKP-00049$129.95 -
HK416, MR556 Bolt Carrier Roll Pin
H&K Heckler & Koch
$6.95Heckler and Koch HK MR556/416 Roll Pin for Catch On Bolt Carrier This roll pin is used in the bolt carrier to secure the catch. Compatible With: HK MR556 HK 416HKP-16847$6.95 -
HK33, HK53, HK93 Firing Pin
H&K Heckler & Koch
$79.95H&K 93, 53, & 33 (5.56/.223) Firing Pin This is the factory-correct HK German firing pin and is a great replacement part. This is also a great upgrade for your HK 223.556 clones. This part is no longer available from HK as this part is out of...HKP-00192$79.95 -
On Sale
HK33, HK53, HK93 Firing Pin - Titanium
HKP HK Parts
Now: $44.95Was: $49.95HK93, 33, 53 Firing Pin - Titanium A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK 93, HK33 & HK53 weapon system. Get the lightest, strongest firing pin available for your HK firearm. Ideal for...HKP-17769Now: $44.95Was: $49.95 -
On Sale
HK MP5SD Parts Kit - Pistol Build - 9mm - Receiver Flat and Weldment Set
HKP HK Parts
Now: $1,911.95Was: $2,249.95HKP HK MP5SD Kit - Pistol Build - 9mm MP5SD 9mm parts kit complete with all the parts needed for an MP5 semi-auto pistol. Each kit comes with all 6 of the needed US made compliance parts. This is the first time that these iconic kits have been...HKP-18052Now: $1,911.95Was: $2,249.95 -
Out Of Stock
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Straight
H&K Heckler & Koch
$237.95German H&K MP5 9mm 30 Round Straight Magazine Original German HK magazines ranging from VG to like new condition. Date coded with factory HK markings. These rare magazines were discontinued by HK long ago. Get yours before...HKP-16263$237.95 -
Out Of Stock
HK CC9 Barrel - Threaded 1/2x28
RCM
$223.95RCM HK CC9 Barrel - Threaded 1/2x28 This high-quality threaded barrel is precision-engineered to fit the Heckler & Koch CC9, providing enhanced accuracy and reliable function for both competitive shooting and everyday use. 1/2x28 right-hand...HKP-22619$223.95 -
On Sale
HK416, MR556 ARC-Fire with Geissele Trigger - 3-Position - Ambi Controls
AS Designs
Now: $559.95Was: $689.95HK416, MR556 A4 3-Position ARC-Fire with Geissele*** Trigger and Ambidextrous Controls AS Designs' ARC-Fire (Active Reset Clutch) trigger is an innovative take on forced reset triggers. The trigger is reset immediately after each shot, resulting in...HKP-22435Now: $559.95Was: $689.95 -
On Sale
HK91, G3 Barrel Flute Cleaning Brush - 7.62x51 / .308
HKP HK Parts
Now: $15.95Was: $19.95HKP Cleaning Brush for HK91 and HK G3 Barrel Flutes 7.62x51 / .308 This brush is a must-have for cleaning the chamber flutes on a HK G3 or HK91-style firearm. If the flutes become clogged or dirty, the firearm will cease to extract properly and render...HKP-22317Now: $15.95Was: $19.95 -
HK416, MR556, HK417, MR762 Pistol Grip - Tool Included - RAL8000
H&K Heckler & Koch
$149.95HK Heckler and Koch Adaptive Pistol Grip with tool in RAL8000. Factory German adaptive pistol grip in RAL8000. Originally used on the HK416 A7, this grip fits a variety of H&K platforms. Compatible With: HK MR556 A1 HK MR556 A4 HK416 HK MR762...HKP-21963$149.95 -
HK MP5, SP5K Optic Mount with Aimpoint ACRO P-2
HKP HK Parts / Aimpoint
$689.95HK MP5 Aimpoint ACRO P-2 with HKP Optic Mount The HKP optic mount securely positions the ACRO P-2 sight for fast, intuitive target acquisition, while preserving a clear view of the factory sights. Includes: HK MP5 Optic Mount (ACRO interface) Aimpoint...HKP-21899-M$689.95 -
On Sale
HK VP9SK Magwell - Low Profile
HKP HK Parts
$47.95 - $59.95HKP HK VP9SK Low Profile Magwell Low profile, every day carry magwell for the HK VP9SK pistol. For those that would like the enhancements and competitive advantage a mag well offers without the bulk of the larger competition magwell. Funnels mags...HKP-21456-M$47.95 - $59.95