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 G36 Helmet Stock
B&T Brugger & Thomet
Now: $251.95Was: $280.00B&T HK G36 Helmet Stock The B&T G36 helmet stock was designed to clearance the operator's helmet when viewing the target through the rifle's sights. This military derived design is precision made in Switzerland. Compatible With: HK G36HKP-21692Now: $251.95Was: $280.00 -
On Sale
HK 940 Barrel - .30-06
H&K Heckler & Koch
Now: $549.95Was: $948.95Heckler and Koch HK 940 .30-06 Rifle Barrel Genuine new HK 940 .30-06 barrel featuring date code and Ulm antler proof. These barrels are unfired and fully nitrided for a lifetime of use. These barrels are very rare and no longer in production...HKP-21605Now: $549.95Was: $948.95 -
On Sale
HK MP5SD, MP5K Locking Piece - 115 Degree - .40 S&W, 10mm
RCM
Now: $35.95Was: $44.95RCM HK MP5 & MP5K 40/10 SD 115 Degree Locking Piece Compatible With: MP5/K 10 MP5/K 40HKP-21525Now: $35.95Was: $44.95 -
On Sale
HK416 Handguard - 9" - Strike Industries GRIDLOK - Lightspeed
Strike Industries
Now: $286.95Was: $318.95Strike Industries HK 416 - 9" Handguard - Gridlok - Light Speed The Strike Industries GRIDLOK® Rail for 416 gives you a primary, a secondary or multiple setup options as a quick and direct handguard swap. The GRIDLOK® Rail for 416 has the SI...HKP-21313Now: $286.95Was: $318.95 -
On Sale
HK VP9SK Compensator with Rail Adapter
HKP HK Parts
Now: $78.95Was: $189.95Comp Weight™ With Rail Adapter - VP9SK - Steel HK Parts VP9SK Comp Weight™/compensator with Rail Adapter Installed is the perfect addition to your HK VP9SK firearm with our low profile, aggressive Comp Weight™ that flows with the lines...HKP-21301Now: $78.95Was: $189.95 -
On Sale
HK MP5K Barrel - 10mm - Threaded 9/16x24 with 3 Lug
RCM
Now: $223.95Was: $279.95RCM HK MP5K 10mm Barrel - Threaded 9/16x24 Enhance the performance of your MP5K with the RCM HK MP5K 10mm Barrel. This barrel is precision engineered for superior accuracy and durability, making it an essential upgrade for firearm enthusiasts...HKP-21157Now: $223.95Was: $279.95 -
On Sale
Ruger Precision Rifle Bolt Shroud
Tactical Precision MFG
Now: $28.95Was: $89.99Tactical Precision MFG Aluminum Ruger Precision Rifle Bolt Shroud Replacement bolt shroud for Ruger Precision rifles made from machined aluminum and colored in black Cerakote.HKP-20775Now: $28.95Was: $89.99 -
On Sale
Remington 700 - 20 MOA - Scope Base Long Action
Tactical Precision MFG
Now: $35.95Was: $76.99TPM Remington 700 Scope Base Long Action 20 MOA These tight tolerance, bomb proof scope rail allow the shooter to make best use of the scope's elevation adjustment for those long-range shots and engagements with 20 MOA options and will match factory...HKP-20763Now: $35.95Was: $76.99 -
On Sale
HK33 A3 German Parts Kit
H&K Heckler & Koch
Now: $3,249.95Was: $3,389.95Heckler and Koch HK33 A3 Parts Kits - Surplus Rare HK33 parts kit professionally de-milled and prepared in accordance with BATF specifications. This configuration includes the A3 collapsible stock, factory 0, 1, 25 trigger group, wide handguard, HK...HKP-20723Now: $3,249.95Was: $3,389.95 -
Out Of Stock
HK Factory Hard Case
H&K Heckler & Koch
$0.00H&K Factory Hard Case H&K hard shell case. This is the perfect case that will guarantee to protect your most prized possessions. Only a few in stock so get them before they are all gone. Compatible With: MR762 MR556 USC SL8 rifles any rifle...HKP-20564$0.00 -
HK SL8 Adjustable Buttstock Piece - Used - Gray
H&K Heckler & Koch
$19.95HK SL8 Adjustable Buttstock Piece Gray in Color - USEDHKP-20051$19.95 -
Out Of Stock
HK G36K Barrel - 5.56 / .223 - 12.5"
HKP HK Parts
$499.95HKP HK G36K Barrel Brand new HK G36K barrel made from 416 stainless steel and nitrided, uninstalled & unfired. The G36K barrel uses a factory German or USA spec G36K/G36C gas block. Counts as one USA made complaint part. Perfect for the SL8/G36 style...HKP-18194$499.95