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
HKP Range Bag - Large
HKP HK Parts
Now: $27.95Was: $34.95HK Parts Range Bag - Large Get your hands on our new premium range bags. Main cover has loop fastener panel for hook and loop patches and name tape and a top hook and loop fastener loop for securing hearing protection for easy access when at the shooting...HKP-20741Now: $27.95Was: $34.95 -
HK USPC, P2000 Magazine with Pinky Rest - 9mm - 10 Round
H&K Heckler & Koch
$59.95USP Compact & P2000 9mm Magazine – Complete (10-Round with Extended Floor Plate) Brand new HK German manufactured. Meets the requirements of areas with high capacity 10-round magazine restrictions. Compatible With: HK USP Compact 9mm HK P2000...HKP-01460-M$59.95 -
Out Of Stock
HK416, MR556 Ejection Port Cover - FDE
H&K Heckler & Koch
$59.95Heckler and Koch German HK 416, MR556 Ejection Port Cover In FDE HK manufactured newer polymer style cover assembly found on the latest HK 416 and HK MR556's. This item can also be used on other AR15 style projects to enhance the build with the finest...HKP-18062$59.95 -
On Sale
HK CC9 Complete Magazine - 15 Round - 9mm
HKP HK Parts
$63.95 - $79.95HKP HK Parts - HK CC9 Complete Magazine - 15 Round - 9mm This fully assembled 15-round magazine for the CC9 combines a factory German 12-round magazine with the HK Parts +3 magazine extension. Compatible With: HK CC9HKP-22038-M$63.95 - $79.95 -
On Sale
HK MP5K Stock Adapter - Tailhook KES
Safety Harbor Firearms
Now: $251.95Was: $279.95KES HK MP5K Tailhook The all-new KES for the MP5k is designed to fit HK clones with two pins affixing the rear receiver cap. Specifications: Guide rods slide into the existing slots present on the receiver Rods machined to go underneath the reinforcing...HKP-21089Now: $251.95Was: $279.95 -
On Sale
Bolt Head Locking Roller +5 - 8.05mm - New
HKP HK Parts
Now: $6.95Was: $8.99Roller +5 - New - 8.05mm HK Parts Standard (8.05 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way...HKP-19440Now: $6.95Was: $8.99 -
HK UMP Magazine - 25 Round - .45 ACP
H&K Heckler & Koch
$145.95New HK Heckler and Koch Non-LE, Mil Marked .45 ACP 25 Round Magazine for HK UMP The UMP .45 magazines will fit all UMP factory firearms as well as the USC's that have been converted to accept UMP magazines. Compatible With: HK UMP .45 HK USC to UMP . 45...HKP-00605$145.95 -
Out Of Stock
HK UMP, USC Barrel Roll Pin
H&K Heckler & Koch
$11.94Heckler and Koch German made USC and UMP Universal Barrel Roll Pin HK recommends replacing the barrel pin when the barrel is removed with a new barrel pin. This is a great spare part to have on hand. The factory-correct barrel pin for all HK UMP and USC...HKP-00603$11.94 -
On Sale
HK MP5SD Barrel - 9mm - 5.74" - Threaded 18x1
RCM
Now: $179.95Was: $199.95RCM HK MP5SD 9mm Barrel - Threaded 18x1 RCM HK Style MP5 SD Barrel. Specifications: Made In The USA Cold Hammer Forged Steel (CHF) 16 Fluted Chamber Threaded 18x1 Overall Length 5.74" Nitride Finish To Entire Surface Of Barrel...HKP-02118Now: $179.95Was: $199.95 -
On Sale
HK MP5 Handguard - Tri-Rail
MI Midwest Industries
Now: $152.95Was: $169.95MI HK MP5 Tri-Rail Handguard Features: Professional grade one-piece design Tri-Rail 1913 Picatinny on 3 sides for accessory attachment Simple installation includes all tools Extremely lightweight design Features two anti-rotation QD sling swivel...HKP-21485Now: $152.95Was: $169.95 -
On Sale
HK MP5K, SP5K, SP89 Handguard with Handstop - SL
Magpul
Now: $41.95Was: $47.45Magpul HK MP5K, HK SP5K, HK SP89 SL Handguard The Magpul SL Handguard for the SP89/MP5K/SP5K is a high-strength, injection-molded polymer handguard solution that provides the user with improved ergonomics, anti-slip texturing,...HKP-19310Now: $41.95Was: $47.45 -
On Sale
HK MP5K, SP89 Bolt Carrier - Full Auto - 9mm - USA
RCM
Now: $134.95Was: $149.95MP5K Full Auto Bolt Carrier - US- Made - RCM This part is machined from billet ordnance steel. Our US-made MP5K carrier is made to the most updated and latest MP5K F specs. Tungsten filled, heat treated, and factory fresh production. Providing the finest...HKP-01190Now: $134.95Was: $149.95