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, 94 Magazine Spring - 15 Round
H&K Heckler & Koch
$8.95HK German MP5, 94, SP89, MP5K 15 Round Magazine Spring Compatible with all 15 Round MP5 and 94 style curved magazines. This is a must-have repair and replacement part, great to have for spares.HKP-00090$8.95 -
Out Of Stock
HK MP5 A2 Buttstock - USED
H&K Heckler & Koch
$149.95H&K Heckler & Koch Used A2 Rear Buttstock for HK MP5 Factory German MP5 A2 buttstock in excellent condition, ready to drop in. These stocks feature authentic date codes for those seeking a classic touch. Don’t miss out. Only a limited...HKP-00680$149.95 -
HK MP5, MP5K, AP5, AP5-P Rear Sight Drum
MKE
$32.95MKE AP5, AP5-P, HK MP5, MP5K Rear Sight Drum This rear sight drum is manufactured by MKE for AP5 and AP5-P firearms and fits MP5 and MP5K pattern rifles and pistols. It is commonly used as an upgrade for clones that ship with G3-style rear sight bases...HKP-22490$32.95 -
On Sale
IMI UZI Complete A.R.S Lower Grip - USED
IMI
Now: $138.95Was: $189.95IMI UZI Complete A.R.S Lower Grip - USED VARYING CONDITION SHOWN - SOLD INDIVIDUALLY Israel manufactured complete lower grip. Each grip in is good condition and show signs of wear. Please Note: This lower grip may or may not be marked with the A.R.S...HKP-99193Now: $138.95Was: $189.95 -
HK MP5, MP5K Scope Tab - Billeted - Weldment
HKP HK Parts
$9.95HKP HK MP5/K Billeted Scope Tab - Weldment Billeted scope tab weldment for HK MP5, MP5K, and compatible clones. Provides a correct mounting point for optics. Compatible With: HK MP5/94 HK MP5K/SP89 HK MP5 40/10 Clones or custom buildsHKP-22063$9.95 -
Out Of Stock
HK P30 Conversion Barrel - .40 S&W to 9mm - Threaded - 1/2x28
RCM
$214.95RCM HK P30 .40 to 9mm Conversion Barrel - Threaded - 1/2x28 This 9mm conversion barrel is a drop-in replacement that allows your P30 to shoot the popular 9mm cartridge. The conversion barrel features a standard 1/2x28 thread pitch and includes a...HKP-21791$214.95 -
Holosun HK VP9/MP5 Reflex Sight HE-507K - Green
Holosun
$354.95Holosun HK VP9 SCS-MOS Reflex Sight The HE507K-GR X2 is an open reflex optical sight designed for subcompact pistol applications. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes. Additional features include...HKP-21677$354.95 -
Out Of Stock
B&T SPC9/10/45 Complete Stock Conversion Kit
B&T Brugger & Thomet
$165.00B&T SPC9, SPC10, SPC45 Complete Stock Conversion Kit Factory B&T kit to convert the B&T retractable brace to a retractable stock configuration. Includes: Buttplate Limiter Screws Compatible With: B&T SPC9 B&T SPC10 B&T...HKP-21731$165.00 -
Out Of Stock
B&T Telescopic Stock End Cap
B&T Brugger & Thomet
$8.95B&T Telescopic Stock End Cap B&T replacement end cap for telescopic stocks. Limits the extension of the stock to keep it from sliding out of the guides.HKP-21721$8.95 -
Out Of Stock
HK G36 IDZ Stock - Concave
H&K Heckler & Koch
$386.95H&K G36 IDZ Stock Concave When it comes to adjustable, folding G36 stocks, the IDZ tops the list. German made by HK with a concave buttpad for reliability and comfort. Features: 3 position forward & back 3 cheek piece elevation...HKP-21501$386.95 -
R3D 2.0 Night Sights - Orange
XS Sights
$127.95XS Sight Systems R3D 2.0 Night Sights - Orange Their second-generation R3D night sights are engineered to give you a brighter stronger set of sights. Easily install their sights with a set that requires 50% less force for installation. R3D sights are...HKP-21464$127.95 -
HK/Hogue Ballista First Responder Knife
Hogue
$239.95H&K/Hogue Ballista First Responder Knife 3.5" Drop Point Blade - Black CerakoteRed/Black ChromaCut G10 Frame Features: Frame: red/black chromacut Deep carry pocket clip (right or left handed, tip up carry) Seatbelt cutter (thumb stud...HKP-21349$239.95