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 MP5 Stock with 4 QD Rubber Buttstock Pads
AC-Unity
Now: $64.95Was: $129.95AC-Unity HK MP5 Stock with 4 Rubber QD Butt Pads MP5 side folding stock assembly from AC-Unity. This assembly includes four quick detach butt pads for a custom fit, prefect for any shooter. Multiple sling attachments accomodate a wide range of...HKP-21634Now: $64.95Was: $129.95 -
HK USP, Mark 23 Magazine - 17 Round - Enhanced - .45 ACP
HKP HK Parts
$113.95HKP 17 Round HK USP .45 ACP/Mark 23 Enhanced Magazine Our 17 round magazine starts life as a factory HK 12 round magazine then gets a capacity bump with our +5 mag extension. Compatible With: HK USP .45 HK Mark 23HKP-21459-M$113.95 -
On Sale
HK MP5K, SP5K Spare Buffer for Folding Stocks and End Caps
HKP HK Parts
Now: $7.95Was: $9.95HKP Spare Buffer For Folding Stocks & End Caps New US manufactured flat style "H"buffer to replace the factory HK buffer on MP5K folding stocks and end caps. As well as a spare or replacement buffer for the MP5 & MP5K folding B&T stocks. Made...HKP-17886Now: $7.95Was: $9.95 -
HK VP9, VP9SK, VP40 Disassembly Safety Spring
H&K Heckler & Koch
$2.95Elbow Spring For Dismounting Safety HK VP9, HK VP40 Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40HKP-16791$2.95 -
On Sale
HK VP9, VP40 International Holster - Comp Carry
Comp-Tac
Now: $67.95Was: $79.95Comp-Tac HK VP9/VP40 International Comp Carry Holster At last a custom made Comp-Tac International OWB holster for your HK pistol that allows you to have the Rail Mount Compensator, Comp Weight, or Match Weight installed. Manufactured by the best...HKP-20013-MNow: $67.95Was: $79.95 -
HK P30 Series Trigger V4 Medium Weight Return Spring
H&K Heckler & Koch
$14.95Trigger Return Spring For V4.1 or Combat Defensive Action (CDA) Trigger for the HK P30, P30L pistols. This spring is also known as the medium weight trigger return spring. Found on all (European CDA) variant 4.1's. Compatible With: P30 P30L P30S All LEM...HKP-16745$14.95 -
On Sale
HK P30, P2000 Short Reset System Thumb Safety
Grayguns
Now: $80.95Was: $90.00Grayguns Short Reset System Thumb Safety for HK P30 and HK P2000 Replicate Grayguns custom in-house short reset conversion with a drop-in kit for your HK P30 with thumb safety. Cut from bar stock steel, these kits provide an exacting fit for easy...HKP-19756Now: $80.95Was: $90.00 -
On Sale
HK MP5 Magazine Spring - 30 Round - Enhanced
HKP HK Parts
Now: $6.95Was: $8.95HKP HK MP5 30 Round Enhanced Magazine Spring US-made enhanced 30-round magazine spring for the MP5. Provides improved feeding reliability and consistent spring tension. Compatible With: HK MP5/KHKP-22157Now: $6.95Was: $8.95 -
Out Of Stock
Tailhook Mod 1 Brace
Gear Head Works
$129.95Gear Head Works Tailhook Mod 1 The GHW Tailhook clamps to pistol buffer tubes or adapter spuds ranging from 1.17" to 1.2" in diameter. It features a limited rotation sling swivel QD socket as well. Weighing in at a scant 4.5 ounces, you will never feel...HKP-19134$129.95 -
On Sale
HK MP5 .22LR Handguard - M-LOK
HKP HK Parts
Now: $135.95Was: $169.95HKP HK Parts and Heckler and Koch M-LOK Forearm for HK MP5 .22LR HK Parts brings you a long overdue option for all the MP5 .22LR owners. Our new forearm takes the classic MP5 plastic forearm aesthetics from the MP5 .22LR and combine it with M-LOK...HKP-21260-MNow: $135.95Was: $169.95 -
On Sale
HK UMP 45, SMG 45 Magazine Loader
HKP HK Parts
Now: $31.95Was: $39.95HKP HK UMP 45, SMG 45 Magazine Loader The enhanced loader is the finest loader available for UMP 45 magazines. Speed up your load time and save your thumb in the process. Made in the USA. Compatible With: H&K UMP & USC 45 magazines LWRC SMG 45...HKP-19662Now: $31.95Was: $39.95 -
HK VP9, P30, USP Compact, P2000 9mm Magazine Locking Plate
H&K Heckler & Koch
$5.959mm Magazine Locking Plate New HK German factory part. This is the locking plate for the bottom of the magazine spring. Compatible With: VP9 15 Round VP40 13 Round VP9SK 15 Round VP9SK 13 Round P30 15 Round P30 .40 13 Round USP Compact 9mm 13 Round USP...HKP-01585$5.95