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 Locking Piece #24 - 90 Degree - Low Impulse - .40 S&W, 10mm
H&K Heckler & Koch
$129.95New HK German MP5 40 or MP5 10mm Low Impulse Locking Piece Marked #24 This is the factory 90-degree locking piece. Used for standard loads with low to average impulses. Compatible With: MP5 10 MP5 40 MP5 .357HKP-00438$129.95 -
HK MP5 Trigger Group, Complete - SEF Semi Auto - Clipped and Pinned - .40 S&W, 10mm
H&K Heckler & Koch
$449.95HK German MP5 40, MP5 10mm SEF Clipped & Pinned Semi-Auto Trigger Group - Complete Ready to install on your HK clone or a custom build.HKP-00447$449.95 -
HK MP5, HK90 Series Hammer Spring Bushing - Burst
H&K Heckler & Koch
$19.9990 Series Hammer Spring Bushing For Burst Trigger Packs This part will fit both two and three-round burst trigger packs.HKP-02398$19.99 -
HK416, MR556 Carbine Stock - MOE - Commercial Spec
Magpul
$54.95Magpul MOE (Magpul Original Equipment) Commercial-Spec Model for AR15/M4 Carbines Made in the USA, the MOE stock Commercial-Spec Model is a drop-in replacement buttstock for AR15/M4 carbines using commercial-spec-sized receiver extension tubes. The...HKP-10629$54.95 -
On Sale
CZ Scorpion Stock or Brace Adapter - EVO Ace
HKP HK Parts
Now: $17.95Was: $39.95CZ Scorpion EVO Ace Brace/Stock Adapter The CZ Scorpion EVO ACE Stock Adapter allows you to upgrade your CZ Scorpion with any ACE Folding Stock/Brace or ACE Stock/Brace Accessories. Solid billet machined aluminum adapter anodized black in color.HKP-18523Now: $17.95Was: $39.95 -
On Sale
HK MP5, SP5, MP5K, SP5K Cocking Handle - Extended - Enhanced
HKP HK Parts
Now: $31.95Was: $39.95HKP HK MP5, MP5K Extended Cocking Handle - Enhanced HKP extended and enhanced cocking handle for HK MP5 and MP5K pattern firearms. Machined from a solid steel billet and salt-bath nitride finished, this handle offers improved strength, better wear...HKP-22864Now: $31.95Was: $39.95 -
On Sale
HK MP5, AP5 Full Auto Sear Spring Spacer
MKE
Now: $1.45Was: $1.95MKE Distance Sleeve for HK MP5 and AP5 Features: Precision-machined roller used in traditional roller-delayed trigger packs. Ensures perfect trigger geometry, smooth operation, and long-lasting reliability. Compatible With: HK MP5 Century...HKP-22477Now: $1.45Was: $1.95 -
Out Of Stock
HK33, HK93 Buttstock - A2 - Black
$74.95Malaysian Contract Black A2 Stock for HK33, HK93 Malaysian contract black A2 fixed stock for HK33 or HK93 pattern rifles. Ideal as a correct-style replacement stock or to give your 5.56 roller-lock build a classic fixed-stock profile. Compatible...HKP-22428$74.95 -
On Sale
CZ Scorpion Binary Trigger - Curved - BFSIII - BLEMISHED
FA Franklin Armory
Now: $349.99Was: $495.95Franklin Armory CZ Scorpion - BFSIII - Binary Trigger - Curved - 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...HKP-18881-BNow: $349.99Was: $495.95 -
HK MP5 Selector Lever Extension - Used
H&K Heckler & Koch
$566.95H&K MP5 Safety Selector Lever Extension - Used Used factory original HK MP5 safety selector lever extension in good condition. This part affixes to the safety selector lever to extend the safety lever for easier actuation. This is a used part,...HKP-99317$566.95 -
On Sale
HK MP5K Recoil Rod Assembly - 9mm
RCM
Now: $45.95Was: $54.95RCM HK MP5K Recoil Rod Assembly The recoil rod and spring assembly is a great item to have on hand for replacement and spares as this is a consumable part. Compatible With: HK MP5K NOT compatible with SP5K with the F-style recoil rod MP5K clones...HKP-22203Now: $45.95Was: $54.95 -
On Sale
HK416 A5, MR556 A3 Barrel Nut
Nefarious Arms
Now: $33.95Was: $39.95Nefarious Arms HK MR556 A3/416 A5 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 in the US to the highest quality standards...HKP-22082Now: $33.95Was: $39.95