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 Adapter - Muzzle Brake or Suppressor - 1/2x28
Surefire
$165.00Surefire (5.56/.223) Muzzle Brake/Suppressor Adapter - Threaded 1/2x28 The SureFire muzzle brake is designed for M4, M16, HK 416, and MR556 weapons with 1/2-28 muzzle threads. It significantly reduces recoil impulse and muzzle rise, enhancing...HKP-17378$165.00 -
HK416, MR556 Bolt Carrier
H&K Heckler & Koch
$397.95H&K HK MR556/416 Factory Bolt Carrier With The Newer Style Bolt Retaining Key This is the factory one-piece carrier that has the out-of-battery disconnect and the bolt retaining latch assemblies installed to make up the HK MR556 (556...HKP-02718$397.95 -
HK416, MR556, HK417, MR762 Disconnector
H&K Heckler & Koch
$18.95Heckler and Koch HK416, MR556, HK417, MR762 Disconnector for Lower New HK German manufactured part. This is the latest generation of HK disconnector for the HK MR and HK HK416 and HK417 family of firearms. Compatible With: HK416, MR556 HK417,...HKP-02674$18.95 -
HK G36, SL8, USC, UMP Sight Screw - Rear
H&K Heckler & Koch
$19.95HK G36, SL8 & USC, UMP Rear Sight Screw Rear sight screw to retain HK G38/Sl8 & USC/UMP rear sights housings to the rear sight base. Compatible With: G36, SL8 USC, UMPHKP-16382$19.95 -
HK MP7, G36, Bolt O-Ring - Firing Pin - US
USA
$5.95HK G36 & MP7 Firing Pin Bolt O-ring. This is also the O-ring for the retaining pin for the MP7- US. Compatible With: HK G36 HK MP7HKP-18373$5.95 -
HK SL8 Optic Screw - Adjusting - Dual and Single Optics
H&K Heckler & Koch
$14.95HK SL8 Dual and Single Adjusting Optic ScrewHKP-16387$14.95 -
HK USC, SL8 Sight Support Spring
H&K Heckler & Koch
$9.95H&K USC/SL8 (.45 ACP/5.56/.223) Rear Sight SpringHKP-16516$9.95 -
Out Of Stock
HK33, HK53, HK93 Cleaning Kit - 5.56 / .223
HKP HK Parts / Heckler & Koch
$89.95H&K HK 93/53/33 (5.56/.223) Cleaning Kit New Factory HK German 93, 33, 53, or other HK .223/5.56's cleaning kit for all HK's or clones. This is the factory HK cleaning kit issued by HK as an OEM product. Includes: Cleaning rod for short and long...HKP-01550$89.95 -
Handguard Rail Screw - Tactical
PTR
$0.69PTR Tactical Handguard Rail Screw The 6, 4, 3 & 2 inch rail sections use these screws to attach themselves to the tactical forearm. This is the screw that is used on all the tactical forearm rails (2 inch, 3 inch, 4 inch, 6 inch). A great spare to...HKP-16744$0.69 -
HK MP5, MP5K, AP5, AP5-P Rear Sight Drum
MKE
$32.95MKE AP5, AP5-P, HK MP5, MP5K Rear Sight Drum This rear sight drum is manufactured by MKE for AP5 and AP5-P firearms and fits MP5 and MP5K pattern rifles and pistols. It is commonly used as an upgrade for clones that ship with G3-style rear sight bases...HKP-22490$32.95 -
HK MP5, AP5 Cocking Handle
MKE
$17.95HK MP5 and AP5 Cocking Handle Factory OEM Replacement Factory OEM replacement AP5 cocking handle as found on MKE/Century AP5 models.Compatible With: HK MP5, MP5K, SP89, MP5SD HK SP5, SP5K, SP5-PDW, SP5L Century AP5, AP5-P, AP5-M In-spec clones...HKP-22475$17.95 -
HK MP5, AP5 Firing Pin
MKE
$14.95MKE HK MP5/AP5 Firing Pin - 9mm MKE firing pin for HK MP5 platforms. Compatible With: HK MP5/SP5 Century Arms AP5/AP5P Zenith ZF-5/ZF-5K PTR 9CT/9KTHKP-22243$14.95