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 20 Round HK VP9 Magazine
H&K Heckler & Koch
$64.95H&K 20 Round HK VP9 Magazine New HK German manufactured & factory fresh production. Each factory HK magazine holds 20 rounds for use in all VP9, P30, P30L, P30S 9mm Models. Each magazine is marked with the factory 20 round witness holes...HKP-20861-M$64.95 -
Out Of Stock
HK MP5, MP5K Optic Mount - Low Profile
B&T Brugger & Thomet
$119.95B&T MP5, MP5K - Low Profile Scope Mount B&T low profile scope mount. Specifications: Color: Black Height max: 30.7 mm Length max: 84 mm Length of top rail: 84 mm Material: Aluminum NATO Accessory Rails: 1 Part number: BT-21222 Treatment:...HKP-16875$119.95 -
Out Of Stock
HK MP5, MP5K Dual Magazine Clamp - 9mm
H&K Heckler & Koch
$109.95HK German MP5, MP5K, SP5, SP5K 9mm Dual Magazine Clamp Genuine HK dual magazine clamp for twice the rounds exactly where you need them. This is also a great way to swap between two different types of ammo, like FMJ and JHPs or super and subsonic...HKP-00083$109.95 -
Out Of Stock
HK MP5K Vertical Foregrip - 3 Slot Rail Section
HKP HK Parts / Magpul
$69.95HKP, Magpul MP5K VFG w/Rail Section - 3 Slots New VFG for the MP5K platform is now M-LOK compatible and comes with a Magpul Aluminum 3 slot rail. The perfect combination to install lights or lasers. M-LOK slots are integrated on both sides to make it a...HKP-20726$69.95 -
HK 45C, USPC Magazine - 8 Round
H&K Heckler & Koch
$59.95New HK German HK45C & USPC 45 8-Round Magazine HK German 8-round magazine with finger rest. New factory-fresh, hard to find. Compatible With: HK USP 45 Compact HK45C & HK45C Tactical modelsHKP-00303-M$59.95 -
Out Of Stock
HK MP5 Handguard - .22LR - M-LOK
HKP HK Parts
$99.95HKP HK MP5 .22LR M-LOK Handguard The M-LOK tactical hand guard easily installs on your firearm with minimal effort and locks up solid. No fitting required, a true drop in option. Features: Made in the USA CNC machined from aircraft grade billet...HKP-20305$99.95 -
HK Pistol Magazine Release Spring
H&K Heckler & Koch
$3.95HK Pistol Magazine Release Spring Compatible With: HK P30, P30L & P30S HK P30SK HK P2000 HK P2000SK HK45 HK45 Compact HK VP9 HK VP9SK HK VP40 ALL HK USP & USP Compact Models 9mm .40 S&W .357 SIG 45 ACP All HK Tactical, Elite & Expert...HKP-01814$3.95 -
On Sale
HK VP9 Rail Mount Compensator - Gen 2 V1
Now: $99.95Was: $179.95HKP HK VP9 Rail Mount Compensator - Gen 2 V1 *DO NOT USE COMPENSATOR WITH A THREAD PROTECTOR INSTALLED ON THE BARREL. Doing so will result in damage to your firearm and compensator.* Specifications: Length - 4 1/4 inches Height - 2 1/2...HKP-19000Now: $99.95Was: $179.95 -
HK USP, USPC Laser - Red
HKP HK Parts
$29.95HKP HK USP/USPC Laser - Red Finally, a laser designed to fit the HK USP & USP Compact Family of firearms without a bulky and expensive adapter. This affordable offering is now available to all HK USP, USP owners. This patent-pending offering is a...HKP-16504$29.95 -
Retractable Stock Buffer - MP5 A3 - USA
$7.74MP5 A3 Retractable Stock "H" Buffer For All HK A3 Retractable Stocks The A3 stock buffer is a high-wear and replacement item that needs replacement when torn, cracked, brittle, discolored, and worn. These units are from the same material and durometer as...HKP-14012$7.74 -
HK USP, HK45 Short Reset System
Grayguns
$90.00Grayguns HK USP, HK45 Short Reset System This Short Reset System for the HK USP and HK45 replicates the short reset conversion available at Grayguns. Cut from bar stock steel, these kits provide an exacting fit for easy install. The kit shortens the...HKP-19753$90.00 -
Out Of Stock
HK MP5K, SP5K Telescopic Stock - 9mm - B&T
B&T Brugger & Thomet
$665.00B&T Telescopic Stock - HK MP5K, SP5K B&T Telescopic 5 position retractable stock for HK SP5K/MP5K and clones Compatible With: MP5K, SP5K style of firearms Specifications: Length adjustable in 5 positions Includes replaceable Elastomer bufferHKP-19862$665.00