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, HK94 Cocking Tube Support Spring
H&K Heckler & Koch
$6.95Heckler and Koch HK MP5, HK94 Cocking Tube Support Spring A great spare to have on hand as this part can become worn and be lost. The cocking tube support spring applies pressure to the cocking tube detent to enable the detent to lock into...HKP-01104$6.95 -
On Sale
HK MP5K, SP5K Shoulder Rig Lanyard with Ring - US Made
Now: $17.95Was: $19.95HKP - U.S MP5K Shoulder Rig Lanyard with Ring For use with all HK shoulder harnesses to quickly deploy the stock when folded. This is the same style unit used by agencies such as the Secret Service, FBI etc. Our U.S lanyard is upgraded with a rubber...HKP-20855Now: $17.95Was: $19.95 -
On Sale
HK VP9 Night Sights - R3D - Suppressor Height - Orange
XS Sights
Now: $120.95Was: $142.99XS Sight Systems HK VP9 R3D Night Sights Optics Ready Suppressor Height - Orange R3D might sights feature traditional 3-dot tritium, notch and post, sight picture. The tritium front sight comes equipped with our proprietary photoluminescent orange glow...HKP-20582Now: $120.95Was: $142.99 -
On Sale
HK USP, P30, HK45 Hammer Spring - Reduced Power - 12 lb.
Lazy Wolf
Now: $7.95Was: $9.95Lazy Wolf HK Reduced Power Hammer Spring - 12 lb. An exciting new offering as a joint collaboration from the widely renowned pistol smith Lazy Wolf Guns & HK Parts! This custom spring was designed exclusively by master trigger smith Rick Holm at LWG...HKP-18148Now: $7.95Was: $9.95 -
HK416, MR556 Ejection Door Lock Roll Pin
H&K Heckler & Koch
$4.95Heckler and Koch HK416 and HK MR556 Ejection Door Lock Bolt or Roll Pin Compatible With: HK416 A1, A3, A5 HK MR556 A1, A4HKP-02536$4.95 -
On Sale
HKMP5, HK90 Series Paddle Mag Release Fixture - Easy Install
HKP HK Parts
Now: $149.95Was: $187.95HKP HK Parts Paddle Mag Release Easy Install Fixture for HK90 Series The original one and only paddle mag release fixture. The perfect jig for the installation of the factory correct paddle mag release with the proper hole placement and an easy to...HKP-17587Now: $149.95Was: $187.95 -
On Sale
Canik TP9SFX Rival Compensator
HKP HK Parts
Now: $97.46Was: $189.95HKP Canik SFX Rival Compensator - Gold/Gray Crafted from aircraft-grade billet aluminum and finished in durable cerakote. Features multiple muzzle ports and the additional weight to significantly reduce both muzzle flip and recoil. Compatible...HKP-21396-MNow: $97.46Was: $189.95 -
HK VP9 Match OR Slide Conversion
H&K Heckler & Koch
$549.00Slide Conversion VP9 Match OR - Complete Elevated Sights The VP9 match optics-ready kit quickly and easily converts a standard VP9 or VP9-B to a competition-ready match optics-ready model. No additional parts or tools are needed for assembly. Just swap...HKP-21096$549.00 -
Out Of Stock
HK416, MR556 Buffer Tube Castle Nut - A5 Extended
H&K Heckler & Koch
$75.95Heckler and Koch A5 Factory German Extended Castle Nut for HK416 and HK MR556 Original HK Factory German steel 416 A5 Extended Castle Nut. Perfect for MR556, HK 416 A5 builds, or upgrades.HKP-19164$75.95 -
On Sale
HK MP5 Binary Trigger Group - Navy - Engraved
HKP HK Parts / FA Franklin Armory
Now: $974.95Was: $1,299.95HKP HK MP5 Navy Binary Trigger Group - Engraved 3 Position Navy style Engraved Pictograph– HK Binary Trigger Group Our latest and greatest binary trigger group freshly delivered with a factory HK German housing that was professionally engraved...HKP-21000-MNow: $974.95Was: $1,299.95 -
Out Of Stock
HK416, HK416A5, MR556 Slim Line Buttstock - RAL8000
H&K Heckler & Koch
$94.95HK Heckler and Koch Slim Line Retractable Stock in RAL 8K for HK416, HK416 A5, and HK MR556 New from HK Germany the slim line retractable stock fits all commercial & mil-spec AR-15/M16 buffer tubes. Marked with the HK logo and issued on...HKP-17602$94.95 -
HK P30, P30L, P30S, USP Compact, P2000 - 9mm Recoil Spring
H&K Heckler & Koch
$34.95Recoil Spring New HK German manufacture recoil spring for guide rod. A must-have spare part and a common consumable item. Compatible With: USP Compact 9mm P2000 9mm P30, P30L & P30S 9mm modelsHKP-01560$34.95