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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HK45, USP Sear Catch - New Style, LEM, Standard
H&K Heckler & Koch
$19.95HK USP & 45 LEM & Standard Models New Style Sear Catch This is the new style catch to convert older USP models to the newer style catch and is needed for the LEM conversions. It is also known as the USP match catch. Compatible...HKP-01803$19.95 -
HK G36, SL8 Family Armorer's Manual
HKP HK Parts
$19.95HK G36 & HK SL8 Family Armorer's Manualf This manual is the most comprehensive manual available for the G36 & SL8 family of firearms. The manual covers the G36 & SL8 family in-depth to include all aspects of history, origin, makeup,...HKP-00627$19.95 -
HK MP5, HK90 Series AR Stock or Brace Adapter
HKP HK Parts
$99.95HKP AR Brace/Stock Adapter To HK 90 Series Firearms For use on any commercial, mil-spec, or pistol AR15/M16/M4 stock, brace, & buffer tube of your choice. Perfect for your HK rifle, pistol, or SBR build. With our M4 adapter, you can use your existing...HKP-16550$99.95 -
M-LOK Rail Section - 9 Slot
Magpul
$24.95Magpul M-LOK 9 Slot Rail Section Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined...HKP-19570$24.95 -
HK416, MR556 Ejection Door Lock Roll Pin
H&K Heckler & Koch
$4.95Heckler and Koch HK416 and HK MR556 Ejection Door Lock Bolt or Roll Pin Compatible With: HK416 A1, A3, A5 HK MR556 A1, A4HKP-02536$4.95 -
HK MP5KSD, SP89 Barrel Shroud - Enhanced
HKP HK Parts
$119.95HK Parts MP5K SD Barrel Shroud For SP89 and MP5K Conversion Our MP5K SD shroud is a the best option for those who want to build a custom MP5K SD model. Made in the USA.HKP-00849$119.95 -
HK MP5, HK90 Series Hammer Strut
H&K Heckler & Koch
$9.95H&K G3,91,PTR, 93,33 & MP5, 94 Hammer Strut New HK German Hammer Strut for 90 series rifles and pistols. A perfect spare to have on hand. This is a non-pinned hammer spring shank. Perfect for your HK project or rebuild. Compatible With: The...HKP-15445$9.95 -
HK90 Series Cocking Tube End Cap
H&K Heckler & Koch
$39.95H&K Cocking Tube End Cap/Dust Cap This part is Factory HK, painted black and not surplus or old stock. Each is factory-fresh and manufactured in steel. Compatible With: Compatible with all 90 series HK firearms and clones that use a triple...HKP-00099$39.95 -
HK416 A5, MR556 A4 Gas Vent Screws - 1.0-2.5mm
H&K Heckler & Koch
$31.99H&K MR556 A4 and HK416 A5 Gas Vent Screws German gas vent screw for MR556 A4 gas block. Specifications: Factory reference: 1.3mm is the common factory vent screw size for MR556 A4 Sizing reminder: Larger mm equals more venting, Smaller mm equals...HKP-22470-M$31.99 -
HK VP9F Magazine - 17 Round
H&K Heckler & Koch
$49.95H&K 17 Round HK VP9A1 F Magazine Made in Germany, this magazine features durable steel construction with a sleek black finish. The magazine’s impact-resistant polymer floor plate enhances its durability, especially during reloading. Known...HKP-21649$49.95 -
HKP Range Bag - Small
HKP HK Parts
$29.95Get your hands on our new premium range bags. This range bag is compact while being able to hold a lot of gear. This range bag will easily carry a couple pistols, holster, several magazines & pouches, ammo, eye & hearing protection, and other...HKP-20740$29.95 -
HK VP9SK, P30SK, P2000SK Magazine Spring - 10 Round
H&K Heckler & Koch
$6.95Magazine Spring A great wear and replacement item as this is a consumable part and prone to wear and tear. If your slide is not locking back on the last round or you are having issues with reliable feeding, the magazine spring may be fatigued and...HKP-01480$6.95