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 MP5, MP5K Optic Mount - Picatinny
MI Midwest Industries
Now: $64.77Was: $80.95MI Midwest Industries HK MP5, MP5K Mount - Scope - 9mm - Picatinny Rail Specifications: Easy no gunsmith install, all tools included Allows the user to mount an optic and a light or laser while retaHKP-19368Now: $64.77Was: $80.95 -
Out Of Stock
HK P30, P2000, HK45, USP Flat Sear Spring - Enhanced Match
H&K Heckler & Koch
$10.99Enhanced Match Flat Sear Spring The nickel-plated sear spring is also regarded as a "match" flat spring as it will improve the feel and "smoothness" when pulling the trigger as it takes up some of...HKP-01811$10.99 -
Locking Roller - Plus and Minus Sizes
RCM
$8.95RCM Rollers, + & - Sizes RCM US-made locking rollers are available in both plus and minus sizes, making them the ideal choice for adjusting bolt gaps. These rollers are the top-tier locking rollers...HKP-22094-M$8.95 -
On Sale
HK Stock Pin Bushing Weldment
HKP HK Parts
Now: $3.16Was: $3.95HK Stock Push Pin Bushing Weldment All-steel stock pin bushing weldment for welding in the rear of the flat. This bushing welds into the folded flat and guides the large push pin through the receiver...HKP-17573Now: $3.16Was: $3.95 -
HK MP5, HK90 Series Buttstock Push Pin - USED
H&K Heckler & Koch
$3.95H&K 90 Series Butt Stock Push Pin - USED Each large stock push pin is used to retain the stock to the receiver on the 90 series of firearms. Large push pins are for the stock and the small push pin...HKP-18038$3.95 -
On Sale
HK Armorer Pin Punch Set - Universal
RennSteig
Now: $53.96Was: $59.95Metric Parallel Pin Punch Set With Guide Sleeves - German Manufacture - 8 Piece This punch set is the exact same set used in the HK Armorer classes and approved by HK for use when installing &...HKP-16737Now: $53.96Was: $59.95 -
Out Of Stock
HK MP5, G3, 93 Optic Mount - Micro Ultra-Low - MFI
MFI
$110.95MFI Ultra Low-Profile Red Dot Mount - Aimpoint/Primary Arms/Vortex/Burris The MFI ultra-low-profile scope mount offers the lowest profile of any HK scope mount available. This mount is specifically...HKP-17962$110.95 -
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - MKE
MKE
$47.95MKE 30 Round MP5, SP5, MP5K, SP5K Magazine These MKE MP5 30 round magazines are the perfect addition or replacement for your AP5 or MP5 pistol. The MKE magazine features the original MP5 design...HKP-21184$47.95 -
Out Of Stock
HK MP5K Locking Piece #28 - 80 Degree
RCM
$39.95RCM HK MP5K/N/PDW # 28 Locking Piece 80 Degree This part is used in conjunction with a suppressor and 147-grain or heavier ammunition. This item is made 100% here in the US from enhanced steel and...HKP-02190$39.95 -
On Sale
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm
AC-Unity
Now: $18.36Was: $22.95AC-Unity 30 Round HK MP5 9mm Magazine CLICK ON THE "Bulk Pricing" LINK ABOVE (UNDER THE SKU NUMBER) FOR OUR BULK PRICING SCHEDULE The AC-Unity 30 round MP5 magazine is a lightweight, impact...HKP-20155Now: $18.36Was: $22.95 -
HK Roller Retainer Pin - New Style
H&K Heckler & Koch
$6.95HK Roller Retainer Pin, Clamping Sleeve- New Style This part works with all roller retainer plates and springs. HK started this change of roller retainer pins starting in all 2011-produced bolt...HKP-01954$6.95 -
HK416 Pistol Brace and Stock Adapter - AR-15 Style - .22LR
HKP HK Parts
$34.95HKP HK 416 Pistol Brace Adapter/AR .22LR Stock Adapter Specifications: Made in the USA Easy to install no gunsmithing requiredHKP-17442-M$34.95