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, MP5K Extractor - 9mm - Enhanced
HKP HK Parts
$34.95HK MP5, MP5K 9mm Extractor - Latest Generation Style HK Parts offers the finest US made 9mm "F" type extractor for all HK MP5/94 bolt heads. CNC'd from a solid billet of ordnance grade steel for superior function & durability. Each 9mm extractor has...$34.95 -
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...$99.95 -
HK MP5 Handguard - Wide - M-LOK
HKP HK Parts
$49.95HKP HK MP5 M-LOK Wide Forearm MP5 Wide handguard with M-LOK slots to quickly and easily attach any M-LOK style accessory. This is a great option for those that want to keep a factory MP5 look and still have the ability to add vertical grips,...$49.95 -
HK 45C, USPC Magazine - 8 Round
H&K Heckler & Koch
$54.95New 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 models$54.95 -
Out Of StockOn Sale
HK91, G3, CETME Receiver Flat with Weldment Set
PTR
Now: $150.25Was: $166.95HK91, G3, PTR, CETME Flat & Weldment Combo - PTR Made by PTR91 on original HK tooling using factory specifications and a properly stamped receiver ready to roll and build. No FFL transfer is required as this is an un-folded flat. Compatible...Now: $150.25Was: $166.95 -
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:...$119.95 -
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...Now: $99.95Was: $179.95 -
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...$3.95 -
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...$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...$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...$90.00 -
HKP 9mm Micro Comp - Threaded 1/2x28 RH
HKP HK Parts
$29.95HKP 9mm Micro Comp - Threaded 1/2x28 RH The HK Parts Micro Comp & Thread Protector is designed to be lightweight and functional as both a compensator and thread protector. The HK Parts Micro Comp easily attaches to the end of any factory spec...$29.95