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 CC9 Magazine - 9mm - 12 Round - Extended Floorplate - Red Follower
H&K Heckler & Koch
$49.95H&K HK CC9 12 Round Magazine - Extended Floor PlateHKP-21572$49.95 -
Out Of Stock
HK USP, HK45 Short Reset System
Grayguns
$90.00Grayguns HK USP, HK45 Short Reset System This Short Reset System for the HK USP and HK45 replicates the short reset conversion available at Grayguns. Cut from bar stock steel, these kits provide an exacting fit for easy install. The kit shortens the...HKP-19753$90.00 -
Out Of Stock
HK USPC, P2000 Magazine - 9mm - 13 Round
H&K Heckler & Koch
$49.00H&K HK 13 Round USPC/P2000 9mm Magazine Each magazine is a current HK German manufacturer. Brand new and factory fresh. Compatible With: HK USP Compact 9mm HK P2000 9mm Fits the P2000SK will stick out below the magwell when installedHKP-00312-M$49.00 -
Out Of Stock
HK MP5K Vertical Foregrip - 3 Slot Rail Section
HKP HK Parts / Magpul
$69.95HKP, Magpul MP5K VFG w/Rail Section - 3 Slots New VFG for the MP5K platform is now M-LOK compatible and comes with a Magpul Aluminum 3 slot rail. The perfect combination to install lights or lasers. M-LOK slots are integrated on both sides to make it a...HKP-20726$69.95 -
HK MP5 Handguard - .22LR - M-LOK
HKP HK Parts
$99.95HKP HK MP5 .22LR M-LOK Handguard The M-LOK tactical hand guard easily installs on your firearm with minimal effort and locks up solid. No fitting required, a true drop in option. Features: Made in the USA CNC machined from aircraft grade...HKP-20305-M$99.95 -
HK MP5 Trigger Pack - Full Auto - Complete - 9mm
H&K Heckler & Koch
$349.95H&K Heckler & Koch - HK MP5 Trigger Pack - Full Auto - Complete - 9mm German Each factory full auto trigger pack includes a new 9mm 3rd generation German ejector lever installed. We do NOT use Pakistani, MKE, or US-made ejector levers in our...HKP-00981$349.95 -
HK MP5K Vertical Grip - VFG M-LOK
HKP HK Parts
$49.95HKP HK MP5K Vertical Grip VFG M-LOK Our VFG for the MP5K platform is now M-LOK compatible. The perfect combination to install lights or lasers. M-LOK slots are integrated on both sides to make it a true ambidextrous vertical grip. Made in the USA...HKP-20737-M$49.95 -
On Sale
IMI 32 Round Uzi 9mm Magazine - German Military
IMI
Now: $19.46Was: $39.95IMI 32 Round Uzi 9mm Magazine - German Military These magazines were military only, not commercial, which makes them desirable magazines. Conditions vary from excellent to like new shape. Any cosmetic imperfections are mostly from handling and...HKP-14472Now: $19.46Was: $39.95 -
HK MP5, SP5K Extractor Spring - 9mm
MKE
$6.95MKE HK MP5, MP5K - Extractor Spring - 9mm Extractor spring for all 9mm HK variants including clones. This spring is the #1 repair & replacement item for the MP5 and MP5K family of firearms. Compatible With: HK MP5 HK MP5K HK SP5 HK...HKP-22481$6.95 -
HK, Walther, Colt, .22LR O-Ring- Barrel Adapter
USA
$2.95Heckler and Koch, Walther, Colt, .22LR Barrel Adapter O-Ring Made from the highest quality and very durable Viton material. The O-ring on the adapter tear with use or become brittle over time. Be sure to grab a few extra rings with your adapter to ensure...HKP-17379$2.95 -
HK45C, USPC Magazine - 8 Round
H&K Heckler & Koch
$59.95New HK German HK45C & USPC 45 8-Round Magazine HK German 8-round magazine with finger rest. New factory-fresh, hard to find. Compatible With: HK USP 45 Compact HK45C & HK45C Tactical modelsHKP-00303-M$59.95 -
Out Of Stock
HK MP5, MP5K Cocking Handle - Extended - Enhanced
HKP HK Parts
$39.95HKP HK MP5, MP5K Extended Cocking Handle - Enhanced Enhanced extended cocking handle for the MP5 & MP5K style of firearms. Designed to also function with UTG monolithic M-LOK handguards. Made from solid steel billet and coated with a salt bath...HKP-18267$39.95