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, 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 -
HK MP5, HK33, HK91 Grip Wrap for SEF Contoured Lowers
Solar Tactical
$79.95Solar Tactical HK MP5, HK 93, HK 91 Grip Wrap For SEF Contoured Lower Featureless Kydex grip wrap for use with detachable magazines. Prevents a wrap around style pistol grip. Allows the use of the factory magazine release and detachable magazines over...HKP-19071$79.95 -
HK MP5SD Brass Catcher - Quick Detach
B&T Brugger & Thomet
$210.00B&T MP5SD Brass Catcher For Use With B&T Handguard The B&T brass catcher for the MP5SD locks into perfect position when mounted to the matched B&T's HK MP5SD Tri-Rail Handguard. Features a quick disconnect mechanism for easy...HKP-18099$210.00 -
On Sale
HK MP5 Selector Lever Conversion Set - 4 Position Burst To 0,1
H&K Heckler & Koch
Now: $129.95Was: $179.95HK 4 Position Burst To Semi ONLY Conversion Selector Lever Set - German HK The German HK selector lever set will allow the use to convert the following: 0,1,3,F Trigger packs 0,1,2,F Trigger packs To safe, semi only as far as the way the selector...HKP-17996Now: $129.95Was: $179.95 -
HK91, G3 Folding Stock - HDA3
Haga Defense
$349.95HDA3 Folding Stock for HK91, G3 The HDA3 is a modular, USA-made stock system developed by Haga Defense and A3 Industries. Built for strength, adaptability, and cross-platform compatibility, it delivers premium rigidity, smooth adjustability, and...HKP-22356-M$349.95 -
HK MP5, SP5 ACR Folding Stock With Adapter - Picatinny
F5 MFG
$314.95F5 HK MP5/SP5 ACR Folding Stock w/Adapter - Picatinny The HKP picatinny end cap with the F5 ACR stock allows users to easily swap this, and other stocks, between their MP5 and other platforms. This drop-in ready assembly attaches with the MP5's...HKP-22350-M$314.95 -
On Sale
HK MP5, G3, HK93 Magazine Catch Push Button- Used
H&K Heckler & Koch
Now: $4.95Was: $8.95H&K MP5, G3, PTR, HK93 Push Button for Magazine Catch - Used Factory original HK push button replacement part. Limited quantity available. This is a used part, sold AS-IS, and is not eligible for return. Compatible...HKP-99316Now: $4.95Was: $8.95 -
HK CC9 Slide Cover Plate
H&K Heckler & Koch
$9.95H&K CC9 Slide Cover Plate Made in Germany by H&K, the slide cover plate for the CC9 pistol retains the firing pin assembly within the slide. Compatible With: HK CC9HKP-22135$9.95 -
HK MR762 A4 Gas Vent Screw - 1.0mm-2.5mm
H&K Heckler & Koch
$29.95Heckler and Koch MR762 A4 Gas Vent Screws German gas vent screw for MR762 A4 gas block. Specifications: Factory reference: 1.3mm is the common factory vent screw size for MR556 A4 Sizing reminder: Larger mm equals more venting, Smaller mm...HKP-21954-M$29.95 -
Out Of Stock
HK416 A5, MR556 A4 Barrel - 5.56 / .223 - 16.5"
H&K Heckler & Koch
$389.95H&K HK MR556 A4/A5 16.5" Barrel This 16.5" factory H&K MR556 A4 barrel is cold hammer-forged from high-quality steel for exceptional durability, accuracy, and longevity. Manufactured to Heckler & Koch’s exacting standards, it features a...HKP-21931$389.95 -
SBA3 5 Position Adjustable Stabilizing Brace
SB Tactical
$109.95SB Tactical SBA3 5 Position Adjustable Stabilizing Brace The SBA3™ is a minimalist, 5-position adjustable stabilizing brace designed for platforms that accept a mil-spec carbine receiver extension (not included). It features an integral...HKP-21927$109.95 -
HK91, G3 Muzzle Protector Cap
H&K Heckler & Koch
$8.95Heckler and Koch Muzzle Protector Cap for your HK91 and HK G3 Genuine HK muzzle cap designed to keep debris, water, etc., from entering the barrel. The cap can be removed by hand or when the first round is fired with the cap installed. Standard...HKP-21892$8.95