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 Semi Auto Shelf for Receiver - Billeted
HKP HK Parts
Now: $14.36Was: $17.95HKP Semi Auto Shelf for Receiver - Billeted HK Semi Auto Shelf, Hanger Block to HK's factory specifications for c/p trigger housings. Weld on shelf that is the needed receiver block that welds to...HKP-21470Now: $14.36Was: $17.95 -
HK MP5, HK90 Series Magazine Catch Spring
H&K Heckler & Koch
$4.95Heckler and Koch Magazine Catch Spring for the HK90 Rifle Series New HK German manufacture, not used, worn out surplus springs. Perfect spare and a must-have mag catch spring for all 90 series rifles...HKP-01917$4.95 -
HK UMP, USC Stock Axle Pin
Other
$14.95Heckler and Koch Stock Rear Stock Axle Pin for your HK UMP or USC This is the stock pin that allows you to attach the stock to either the factory receiver of a UMP or for those who are doing the USC...HKP-02591$14.95 -
On Sale
HK MP5, SP5, MP5K, SP5K Magazine - 10 Round - 9mm - California Compliant - KCI
KCI
Now: $47.16Was: $58.95California Complaint Magazine 10-30 - MP5, MP5K - GEN 2 - KCI USA This California compliant magazine has a 10 round block pre-installed which converts a factory 30 round magazine into a 10 round...HKP-20669Now: $47.16Was: $58.95 -
On Sale
HKP 9mm Vented Micro Comp - Threaded 1/2x28 RH
HKP HK Parts
Now: $26.96Was: $29.95HKP 9mm Vented Micro Comp - Threaded 1/2x28 RH The HK Parts Micro Comp and Thread Protector is designed to be lightweight and functional as both a compensator and thread protector. The HK Parts Micro...HKP-19721Now: $26.96Was: $29.95 -
HK UMP, B&T APC Folding Buttstock
H&K Heckler & Koch
$138.95HK German UMP Folding Buttstock Brand new German HK folding stock. This is a required part for the USC-UMP Conversion using the (stock block B). All UMP folding buttstocks come with an HK date code...HKP-00252$138.95 -
On Sale
HK MP5, HK94, MP5K, SP89 Firing Pin - Steel
HKP HK Parts
Now: $13.98Was: $17.47MP5, MP5K, 94, & SP89 Firing Pin - Steel Each part is made using the factory HK material and specifications from original HK German blueprints. Compatible With:HKP-02115Now: $13.98Was: $17.47 -
HK Armorer's Tool Kit
HKP HK Parts
$89.95HKP Armorer's Tool Kit Includes: HK Parts Armorers Puck Punch Bench Block Tool 8 PieHKP-18659$89.95 -
On Sale
HK91, G3 Weldment Set Complete
HKP HK Parts
Now: $79.97Was: $99.95HK G3, HK91, PTR Weldment Set Complete New US manufactured billeted from solid ordnance grade bar stock. Perfect for roller lock or other custom builds. Each weldment set unit is precisely machined...HKP-17509Now: $79.97Was: $99.95 -
On Sale
HK G36, G36C, G36K, SL8 Barrel Wrench
Now: $111.96Was: $139.95Barrel Wrench for HK G36, G36C, G36K, SL8 Barrel wrench designed for all HK G36 and SL8 barrel lengths, from the 9" G36C to the 20" SL8. The tool uses a 3-point contact system for secure engagement...HKP-00283Now: $111.96Was: $139.95 -
HK CC9 Magazine - 9mm - 17 Round
HKP HK Parts / Heckler & Koch
$79.95HK Parts presents this 17 Round 9mm Complete Magazine This fully assembled 17-round magazine for the HK CC9 combines a factory German 12-round magazine with the HK Parts +5 magazine extension...HKP-20339-M$79.95 -
On Sale
HK MP5, HK94, HK93, HK91, PTR SL Grip Module Semi Shelf
Magpul
Now: $50.96Was: $59.95Magpul - SL Grip Module - HKMP5/94/93/91 & Semi Shelf & HK Clones The Magpul SL Grip Module is a high-strength, injection-molded polymer grip module for HK MP5/94/93/91 & Semi Shelf HK Clones*...HKP-19320Now: $50.96Was: $59.95