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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HK416, MR556 Stabilizing Brace - SBA3 5 Position Adjustable
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 -
On Sale
HK MP5, MP5K Magazine - 30 Round - LEO Marked - TiN Coated - Sterling, VA - BLEMISHED
H&K Heckler & Koch
Now: $117.95Was: $159.95HK MP5, MP5K Magazine - 30 Round - LEO Marked - TiN Coated - Sterling, VA - BLEMISHED POOR FINISH - OPEN PACKAGING COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL...HKP-21792-TiN-S-BNow: $117.95Was: $159.95 -
HK MP5K, AP5-P Trigger Group
MKE
$479.95Century AP5-P, AP5-M Trigger Group This trigger group serves as a direct replacement for AP5-P, AP5-M, Zenith clones, and factory MP5K receivers. For customers needing compatibility with shelfed receivers, we also offer a clip-pin service as an optional...HKP-21668$479.95 -
Out Of Stock
BT-20506, 20411 - GHM9, GHM45, KH9 Brace Conversion Kit
B&T Brugger & Thomet
$130.00Brace Conversion Kit for BT-20506/20411(GHM9/GHM45/KH9) Easily convert your B&T folding stock into a brace-compatible setup with this precision Brace Conversion Kit, designed for use with BT-20506 and BT-20411 stock assemblies. This kit enables...HKP-21736$130.00 -
HK416 A5 Flash Hider - .22 LR
HKP HK Parts
$59.95HKP HK 416 .22 LR A5 Flash Hider Our HK Parts A5 flash hider is a directly mounted upgrade that will enhance the appearance of your 416 .22LR build, perfect for those aiming to achieve an authentic A5 style. It comes with an O-ring for secure attachment,...HKP-21575$59.95 -
HK416, MR556, HK417, MR762 Pistol Grip - K2 XL
Magpul
$22.95Magpul Moe K2 XL AR Grip Designed for shooters with larger hands, the K2-XL Grip is similar to the MOE-K2 Grip – AR15/M4 but nearly 25% bigger. A drop-in upgrade for the AR15/M4, it offers a more vertical grip angle thereby improving comfort...HKP-21554$22.95 -
HK MP5K Parts Kit - 10mm - Pistol Build
HKP HK Parts
$1,889.95HKP MP5K 10mm Pistol Build Kit MP5K 10mm complete pistol build kit. Featuring the latest in highest quality components for an unparalleled build. Equipped with a 9/16x24 3-lug threaded barrel to accept a wide variety of muzzle devices and suppressors...HKP-21533$1,889.95 -
On Sale
HK MP5 Stock With Direct Fit Adapter
HKP HK Parts / Magpul
Now: $149.95Was: $189.95HK MP5 Stock With Direct Fit Adapter MP5 DT Magpul stock ready to install on any in-spec MP5 receiver or clone. We take our AR MP5 Adapter and attach it onto a mil-spec buffer tube before combining it with the new Magpul DT Carbine stock. This is a great...HKP-21402-MNow: $149.95Was: $189.95 -
B&T Angled Foregrip - Picatinny
B&T Brugger & Thomet
$71.99B&T Angled Foregrip - Coyote Tan - Picatinny Mount For those shooters who prefer an angled foregrip, this grip is the perfect solution. The lugs at the end of the grip assure a firm rest for the supporting hand. The grip can be mounted easily onto...HKP-21392$71.99 -
Out Of Stock
HK Fray Fixed Blade Knife
H&K Heckler & Koch
$169.95Features: • Frame: Black OverMolded Rubber Scales (Includes Black Paracord - 1/8" Diameter)• Tail Jimping: Provides for better traction in reverse grip• Includes Automatic Retention Sheath (1.7 oz weight) Blade:• Style: Clip...HKP-21283$169.95 -
On Sale
Muzzle Brake - Titanium 3 Port .30 Cal
Tactical Precision MFG
Now: $42.95Was: $84.99TPM - Titanium 3 Port Muzzle Brake .30 Cal This radially ported muzzle brake is for Ruger American and many other lightweight mountain rifles. Features: Weight:0.67 oz Material: Grade 5 titanium Color: Black Threading: 5/8x24HKP-20777Now: $42.95Was: $84.99 -
HK A3 Buttstock Protective Cover - Parkerized
H&K Heckler & Koch
$19.95H&K A3 Parkerized Stock Protective Cover The perfect replacement part for all HK G3, HK33, and MP5 collapsible stocks issued with steel covers. Complete with locking spring clips welded in place.HKP-20649$19.95