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 MP5, G3, MKE AP5 Elbow Spring with Roller - Full-Auto
MKE
$4.95MKE AP5, HK MP5, G3 Full-Auto Elbow Spring with Roller This elbow spring is manufactured by MKE from steel and is used in MP5 and G3 pattern trigger packs. It provides proper tension and function for the trigger pack elbow and is suitable for...HKP-22489$4.95 -
HK91, G3 Magazine - 15 Round - Alloy
H&K Heckler & Koch
$44.95Heckler and Koch HK91, G3, MSG90 15-Round Alloy Magazine Manufactured by Heckler & Koch and converted to 15-round capacity in the United States using a U.S.-made floorplate. Counts as one U.S.-made part for 922r compliance. Compatible With: HK91,...HKP-22427$44.95 -
HK MP5, MP5K Folding Stock or Brace - HDA3
Haga Defense
$349.95HDA3 Stock and Brace for MP5K, SP5K The HDA3 is a modular, USA-made stock and brace system developed by Haga Defense and A3 Industries. Built for strength, adaptability, and cross-platform compatibility, it delivers premium rigidity, smooth...HKP-22355-M$349.95 -
On Sale
AK Binary Trigger - Curved - BFSIII - BLEMISHED
FA Franklin Armory
Now: $385.99Was: $534.95Franklin Armory BFSIII AK-C1 Standard Caliber - 7.62x39 - BLEMISHED DAMAGED PACKAGING - PRODUCT UNAFFECTED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The...HKP-19833-BNow: $385.99Was: $534.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Pistol Grip - Tool Included
H&K Heckler & Koch
$159.95HK Heckler and Koch's Pistol Grip with tool - Black Factory German pistol grip in black. Compatible With: HK416, MR556 HK417, MR762 M27 G28 AR-15, M4, & M16 PlatformsHKP-22208$159.95 -
HK CC9 Extended Base Plate
HKP HK Parts
$44.95HKP CC9 Extended Base Plate This +0 base plate gives your CC9 magazine the extended look and enhanced grip of a full-capacity mag without adding any rounds. Perfect for restrictive states or anyone wanting a streamlined, tactical appearance while staying...HKP-22167-M$44.95 -
HK CC9 Firing Pin Spring Retainer
H&K Heckler & Koch
$5.95H&K CC9 Firing Pin Spring Retainer Manufactured in Germany by H&K, this part secures the firing pin spring to the firing pin assembly, ensuring proper striker function during cycling. Compatible With: HK CC9HKP-22139$5.95 -
HK CC9 Firing Pin Spring
H&K Heckler & Koch
$5.95H&K CC9 Firing Pin Spring Manufactured by H&K, this firing pin spring for the H&K CC9 pistol applies consistent tension to the firing pin, ensuring reliable ignition. Compatible With: HK CC9HKP-22138$5.95 -
HK CC9 Extractor Spring
H&K Heckler & Koch
$5.95H&K CC9 Extractor Spring Made by H&K, the extractor spring for the cc9 pistol provides spring tension to the extractor for reliable cartridge extractions. Compatible With: HK CC9HKP-22130$5.95 -
HK CC9 Magazine Catch
H&K Heckler & Koch
$16.95H&K CC9 Magazine Catch Genuine H&K magazine catch for the CC9 pistol engages and locks the magazine in place while allowing for the quick release during reloads. Compatible With: HK CC9HKP-22106$16.95 -
M-Lok Optic Mount - Offset Light
Magpul
$36.95Magpul M-Lok Offset Light / Optic Mount - Aluminum The M-LOK Offset Light/Optic Mount, Aluminum provides the user with an ambidextrous platform to mount weapons lights or optics at both the 11 and 1 o'clock positions on M-LOK compatible hand guards and...HKP-21875$36.95 -
Out Of Stock
Picatinny Optic Mount - 39mm - Skeleton - Aimpoint ACRO P-2
B&T Brugger & Thomet
$737.95B&T Aimpoint ACRO P-2 w/ B&T Skeleton Mount 39mm The Aimpoint Acro P-2, paired with the B&T Skeleton Mount (39mm), takes the ACRO reflex sight to new heights in durability and reliability. It's fully enclosed design protects against rain, mud...HKP-21857-M$737.95