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, MR556, HK417, MR762 Takedown Pin - Rear - A1 Style
H&K Heckler & Koch
$79.95H&K HK MR556/MR762/416/417 Rear Lower Receiver Locking Pin This is the rear takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and lower receivers and improve...HKP-02672$79.95 -
HK G3 Buttstock Buttpad - Standard - Like New
H&K Heckler & Koch
$11.95H&K Standard Stock Buttpad - Like New This HK German-manufactured stock buttpad in dark OD green is the ultimate replacement for your worn-out or broken buttpad on your G3 A2 fixed stock. Handpicked to ensure the highest quality part possible...HKP-21479-M$11.95 -
On Sale
HK MP5, HK416 Barrel - .22LR - 16.1"
RCM
Now: $169.95Was: $199.95RCM .22LR Rifle Barrel for HK MP5 and HK416 This is the first and only offering of a replacement barrel for the HK .22LR platforms. Replacing the barrel previously required sending the receiver to H&K and having the assembly...HKP-21407Now: $169.95Was: $199.95 -
On Sale
HK P30 Magwell - EDC - Steel
HKP HK Parts
Now: $63.95Was: $79.95HKP HK Parts Steel EDC Tactical Magwell for HK P30 9mm and .40 S&W Our newest and greatest EDC magwell was redesigned for a much faster and reliable mag reloads. With a much greater funneled area it guides you to the correct position...HKP-21194-MNow: $63.95Was: $79.95 -
HK USPC, P2000 Magazine .40 S&W - 12 Round
H&K Heckler & Koch
$58.9512 Round HK USPC & HK P2000 .40 S&W Magazine Low-profile magazine for concealed carry or a lower profile. Each is brand new old stock and may or may not be LEO marked on the magazine body. Compatible With: HK USP Compact .40 S&W HK P2000 .40...HKP-02244$58.95 -
HK Mark 23 Firing Pin Retaining Pin
H&K Heckler & Koch
$8.95HK Mark 23 Firing Pin Retaining Pin Replacement pin for the Mark 23 firing pin block. A must have part to have on hand.HKP-01601$8.95 -
HK416, MR556, HK417, MR762 Detent Takedown Pin
H&K Heckler & Koch
$9.95Heckler and Koch HK417, HK MR556, HK417, HK MR762 Detent Takedown Pin Factory H&K takedown pin for MR556 A4. Compatible With: HK416, MR556 HK417, MR762HKP-02540$9.95 -
On Sale
PTR Universal Windage Adjustment Knob For Rear Sight
PTR
Now: $7.95Was: $9.95HK 90 Series Hand Windage Adjustment Knob For Rear Sights Steel windage screw that allows you to adjust the windage for the rear sights with a quick and easy adjustment without the use of a screwdriver as found on the factory rear sight screws. Perfect...HKP-01444Now: $7.95Was: $9.95 -
On Sale
HK MP5KSD, SP89 Barrel Shroud - Enhanced
HKP HK Parts
Now: $95.95Was: $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-00849Now: $95.95Was: $119.95 -
On Sale
Flare Gun and Flare Kit - 26.5mm - Polish Signal Flares
AC-Unity
Now: $199.95Was: $249.95AC-Unity 26.5mm Flare Gun With Polish Signal Flares The AC-Unity flare gun is a durable launcher designed to dispense 26.5mm flares or smoke grenades. The body of the pistol is made of high impact, UV resistant polymer capable of operating...HKP-20154Now: $199.95Was: $249.95 -
HK45, HK45 Compact USP Detent Compression Spring
H&K Heckler & Koch
$5.95HK Slide Detent Compression Spring For All HK USP & HK45, HK45C Models The detent spring is needed for positive de-cocking and safety functions of the detent plate. A spare and replacement part as it is prone to breakage and wear. This is also one of...HKP-01257$5.95 -
On Sale
HK MP5K, SP89 Handguard - MLOK
HKP HK Parts
Now: $71.95Was: $89.95HKP MP5K/SP89 9mm Handguard - M-LOK The M-LOK tactical handguard installs on your firearm with minimal effort, no fitting required. Designed from the ground up by roller-lock enthusiasts. Features: Made in the USA (922r compliant) Accepts ALL...HKP-17264Now: $71.95Was: $89.95