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 Vertical Foregrip - Short - Picatinny
HKP HK Parts
$24.95HKP Vertical Grip - Picatinny Mount - Short This grip is by far the nicest shorter style or stubby grip we have encountered for the money. This rock solid grip is a must have for anyone that uses a vertical grip. This is the only vertical grip out there...HKP-16409$24.95 -
HK MP5, MP5K Bolt Group Backup Kit - Action 3
H&K Heckler & Koch
$22.95H&K MP5 Bolt Group Backup Kit - Action 3 This kit includes the highest wear and replace items on the MP5 action 3 bolt group, as well as the easy to lose pin. Includes: Factory German MP5 9mm Extractor Spring Factory German Action 3 Roller Retainer...HKP-16993$22.95 -
HK MP5, MP5K Cocking Handle
HKP HK Parts
$29.95HKP MP5, MP5K Cocking Handle Our HK Parts US-made cocking handle, a precise replica of the German design. It seamlessly complements your other accessories, making it an essential addition to any build. Whether you need a reliable spare or want to elevate...HKP-00653-M$29.95 -
HK MP5 Optic Mount - .22LR
MFI
$109.95Low Profile Scope Mount For All HK MP5 .22's (HK, Walther, & Umarex) & ATI GSG-5 Pistols Or Rifles Just released the latest second-generation MFI Low Profile Scope mount for the Umarex HK MP5 & GSG-5 models. MFI scope mount offers the lowest...HKP-02389$109.95 -
HK VP, P30, HK45, USP Firing Pin Block Spring - Enhanced
Lazy Wolf
$9.95Lazy Wolf HK VP/P30/USP/HK45 Enhanced Firing Pin Block Spring An exciting and desirable new offering as a joint collaboration from the widely renowned Master HK pistol smith Lazy Wolf Guns & HK Parts! This spring was designed by master pistol smith...HKP-18110$9.95 -
HK Armorer's Bench Block Tool
HKP HK Parts
$14.95HK Parts Armorers Puck Punch Bench Block Tool for all HK Firearms The HK armorers' puck punch bench block tool is standard issue at all HK armorers' courses. The purpose of the tool is to aid in installing axle and roll pins in your firearm while...HKP-17133$14.95 -
HK MP5K, SP89, SP5K Folding Brace - 9mm - Polymer
SB Tactical
$119.99HK MP5K, SP89, SP5K & Clone - Side Folding Pistol Stabilizing Brace MP5K, SP5K, Zenith Z5P, Z-5K Folding Stabilizing Brace System. This is current production with a polymer brace adapter. ***Please note some clones will need some slight fitting...HKP-21358$119.99 -
HK MP5, MP5K Optic Mount - Low Profile - Picatinny
MFI
$124.95Universal Low Profile Scope Mount for HK MP5K, SP5K This mount differs from our Regular 5.5" Long HK Low Scope Mounts in that it is slightly shorter in length and contoured at the front to allow more area between the cocking handle and the rail. This...HKP-19266$124.95 -
HK Barrel Pin Retaining - 5mm - Standard Size
H&K Heckler & Koch
$9.95H&K HK Pin - Barrel - Retaining - 5mm - Standard Size Barrel Retaining Pin Each barrel pin is used for installing a new or replacement barrel. HK suggest using a new factory barrel pin when installing or reinstalling a HK barrel. We also offer the HK...HKP-00071$9.95 -
HK MP5 Optic Mount - Minimalist - Picatinny
HKP HK Parts
$97.95HKP HK MP5 Minimalist Picatinny Rail Optic Mount Our new Picatinny style optic mount is a game changer for those who want a minimalist look on their MP5 or MP5K. You can have a Picatinny rail without compromising all the real estate that other...HKP-21072$97.95 -
HK 416 Magazine - .22LR - 50 Round - Translucent
BDM Black Dog Machine
$99.95HK, Walther, Umarex HK416 50 Round - .22 LR Magazine Made in the USA by BDM exclusively for HK Parts. Using an existing drum model that is tried and true. This is the only drum ever to be offered for these firearms listed below. Compatible With: HK 416 ...HKP-16236$99.95 -
HK German Sling Hook
H&K Heckler & Koch
$8.95H&K German Sling Hook New old stock HK German sling hook. Made from steel not the cheap aluminum or zinc offerings found elsewhere. Made in Germany. Great For HK sling projects and for spares. The real deal. This is the sling hook that all others...HKP-19433$8.95