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 MP5N Parts Kit - A3 Buttstock and Navy 3 Position Lower - RARE
H&K Heckler & Koch
$2,958.95H&K MP5-N Parts Kit 100% German - A3 Stock & Navy 3 Position Lower - RARE All German HK MP5 Navy parts kit with 3 lug and threaded barrel, Action 3 bolt group, A3 retractable stock, 3 position navy...HKP-15172$2,958.95 -
Out Of Stock
HK MP5 Trigger Group - Burst 4 Position 0,1,3,F - USED
H&K Heckler & Koch
$2,599.95HK Heckler and Koch 4 Position Burst Trigger Group 0,1,3,F, USED Condition for HK MP5 HK German 4 Position 3 Round Burst Trigger Group – complete and ready for use. This is a high-quality, fully...HKP-02610$2,599.95 -
HK MP5 Trigger Group with With ESSL - Navy 3 Position 0,1,Full - 9mm
H&K Heckler & Koch
$2,549.95H&K Heckler and Koch 3 Position Navy Trigger Group 0, 1, Full with Extended Safety Selector Lever for HK MP5 New factory German complete trigger group with the left side extended lever. No longer...HKP-00159$2,549.95 -
HK MP5, HK94 Trigger Group - Ambi FBI 0,1 - Semi Auto - Clipped and Pinned
H&K Heckler & Koch
$799.95H&K Clipped & Pinned Semi-Auto FBI (0,1) Ambidextrous Trigger Group HK German factory Clipped & Pinned Semi-Auto FBI (0,1) Ambidextrous Trigger Group in 9mm For Your HK94 Or MP5 Conversion, this part...HKP-00154$799.95 -
HK G36 2 Position Lower Housing - FDE
HKP HK Parts
$154.95HK G36 (5.56/.223) 2 Position (0,1 Pictogram) Lower Housing This lower housing is available without internals, a unique offering as G36 lowers previously only came as complete trigger groups with...HKP-22510$154.95 -
HK416, MR556, HK417, MR762 Cylindrical Head Screw
H&K Heckler & Koch
$19.95Heckler and Koch Cylindrical Screw for MR762, HK417, MR556, HK416 Factory replacement cylindrical lens-head Allen screw for maintaining or repairing your HK417 and MR556 rifles with original-spec...HKP-22433$19.95 -
Out Of Stock
Compact Vertical Foregrip With Hand Stop - Picatinny
JMK
$98.95Compact Vertical Foregrip with Hand stop - Picatinny The JMK Vertical Foregrips are ideally suited for applications with restricted space. All grips are precision-machined from black walnut and...HKP-22411-M$98.95 -
M-LOK Rail Panel Cover - 2 Slot
JMK
$13.95 - $18.95JMK Rail Panel Cover - M-LOK - 2 Slot JMK M-LOK rail panels are compatible with platforms featuring M-LOK slots. These modular panels are suited for numerous applications. Each panel is sold...HKP-22402-M$13.95 - $18.95 -
B&T APC223, APC300, APC308 Stock or Brace Adapter - Picatinny
B&T Brugger & Thomet
$160.00B&T APC223/300/308 Stock Adapter - Picatinny This adapter allows the installation of picatinny-style stocks or braces onto B&T APC223, APC300, and APC308 platforms. Compatible With: BHKP-22281$160.00 -
On Sale
HK416 A1, MR556 A1 Barrel Nut
Nefarious Arms
Now: $44.96Was: $49.95Nefarious Arms HK MR556 A1/416 A1 Barrel Nut Whether replacing a barrel nut or sourcing the best parts for your build, the Nefarious MR556/416 barrel nut is an excellent option. Meticulously crafted...HKP-22279Now: $44.96Was: $49.95 -
HK CC9 Firing Pin Disconnect
H&K Heckler & Koch
$5.95H&K CC9 Firing Pin Disconnect OEM firing pin disconnect for the H&K CC9 pistol. Controls firing pin engagement during the firing cycle.HKP-22140$5.95 -
HK CC9 Ejector Roll Pin
H&K Heckler & Koch
$5.95H&K CC9 Ejector Roll Pin The ejector roll pin was made in Germany for the CC9 pistol, secures the ejector in place for proper ejection function.HKP-22125$5.95