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 MP5K, AP5-P Recoil Guide Rod - 9mm
MKE
Now: $19.95Was: $24.95MKE HK MP5K 9mm Recoil Guide Rod Incomplete recoil spring guide rod. Compatible With: MP5K MKE AP5-PHKP-22237Now: $19.95Was: $24.95 -
On Sale
HK416, MR556 9" Modular Rail System - Black - BLEMISHED
H&K Heckler & Koch
Now: $286.95Was: $399.95H&K HK MR556/416 9" Modular Rail System - Black - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK German...HKP-17341-BNow: $286.95Was: $399.95 -
On Sale
HK MP5 QD End Cap with Buffer - Black - USED
HKP HK Parts
Now: $59.95Was: $99.95HK MP5 QD End Cap with Buffer - Black - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. With this MP5 QD end cap upgrade you will get a heavier buffer to...HKP-20118-BL-BNow: $59.95Was: $99.95 -
On Sale
HK USC (.45 ACP) Incomplete Trigger Housing - Gray - Used
H&K Heckler & Koch
Now: $29.95Was: $39.95H&K USC (.45 ACP) Incomplete Trigger Housing - Gray - Used ONLY 1 UNIT AVAILABLE - AS PICTURED Used HK German USC Lower Receiver Empty. German HK perfect for spare parts. You can choose gray or black. THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN,...HKP-16479-GY-BNow: $29.95Was: $39.95 -
On Sale
HK VP9, VP9SK, VP40 Replacement Hex Button ONLY - Gold - BLEMISHED
HKP HK Parts
Now: $13.95Was: $24.95HKP HK VP9/VP9SK/VP40 Replacement Hex Button ONLY - Gold - BLEMISHED ONLY REPLACEMENT HEX BUTTON. DOES NOT INCLUDE SLIDE PLATE. CONDITION MAY VARY. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE...HKP-18111-GD-BNow: $13.95Was: $24.95 -
HK CC9 Rear Sight - Black Out
H&K Heckler & Koch
$46.95H&K CC9 Rear Sight - Black Out Genuine H&K blacked out serrated rear sight for CC9 pistol. Provides a clear sight picture without rear dots. Compatible With: HK CC9HKP-22144$46.95 -
On Sale
HK34 9mm Rifle Build Kit - Navy Binary
HKP HK Parts
Now: $1,937.95Was: $2,279.95HK34 9mm Rifle Build Kit - Navy Binary Just when you thought all permutations of roller-lock kits had been exhausted, HK Parts brings you the HK34 rifle kit. The HK34 strikes a balance between the shoot-ability of a pistol caliber with the versatility of...HKP-22075Now: $1,937.95Was: $2,279.95 -
On Sale
HK MP5 Trunnion - .40 S&W, 10mm - Factory - USED
H&K Heckler & Koch
Now: $297.95Was: $549.95H&K MP5 40/10 Factory Trunnion - USED ONLY 1 UNIT AVAILABLE - AS PICTURED Used genuine German trunnion with round guides. Compatible With: HK MP5 40/10 THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS FINAL.HKP-99173Now: $297.95Was: $549.95 -
HK P7 M13 9mm Slide
H&K Heckler & Koch
$1,499.95HK Heckler and Koch P7 M13 9mm Slide Factory German slide for the HK P7 M13 chambered in 9mm. Compatible With: P7 M13 P7 M8HKP-99170$1,499.95 -
HK P30 Slide - .40 S&W - V3
H&K Heckler & Koch
$436.95Heckler and Koch V3 Slide for HK P30 .40 S&W Heckler and Koch V3 steel slide for the P30 chambered in .40 S&W. A factory slide option for replacement, repair, or spare parts use on compatible P30 pistols. Compatible With: P30 .40...HKP-22027$436.95 -
HK P2000, P2000SK Front Sight - 6.9mm
H&K Heckler & Koch
$44.95Heckler and Koch 6.9mm Front Sight for HK P2000, P2000SK Factory German HK 6.9mm front sight for the P2000 and P2000SK. Steel construction with a white sight dot. Fits 9mm, .40 S&W, and .357 SIG variants and installs on the slide’s front...HKP-21998$44.95 -
HK MR762 A4 Hammer
H&K Heckler & Koch
$40.95Heckler and Koch Hammer for HK MR762 A4 Rifles Factory-original German steel hammer for the MR762 A4. Designed as a direct replacement for worn or damaged hammers in MR762 A4 trigger assemblies. Compatible With: HK MR762 A4HKP-21968$40.95