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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On Sale
HK MP5 Poster - Parts Diagram
H&K Heckler & Koch
Now: $4.95Was: $14.95H&K HK MP5 Parts Diagram Poster Factory HK German print of the MP5 breakdown of the iconic MP5. Specifications: Height - 24" Width - 36"HKP-16690Now: $4.95Was: $14.95 -
HK VP9, VP40 Magazine Release - Enhanced - Gen 2
HKP HK Parts
$49.95Enhanced Magazine Release - Alloy - HK VP Series - Gen 2 - New & Improved The oversized magazine release increases the overall surface area and makes it possible to release the magazine without changing the position of your grip. Made in the...HKP-21098-M$49.95 -
HK P30L International Holster - Comp Carry
Comp-Tac
$79.95 - $81.95Comp-Tac HK P30L International Comp Carry Holster At last a custom made Comp-Tac International OWB holster for your HK pistol that allows you to have the Rail Mount Compensator, Comp Weight, or Match Weight installed. Manufactured by the best...HKP-20020-M$79.95 - $81.95 -
HK MP5SD Sealing Ring - Enhanced
HKP HK Parts
$9.95HKP MP5SD Sealing Ring - Enhanced The enhanced sealing ring is made from a newer, longer-lasting material as well as having a slightly thicker profile for secure sealing. The MP5SD sealing ring is the gasket that seals the SD suppressor against the...HKP-18053$9.95 -
HK MP5, HK94 Firing Pin Spring
H&K Heckler & Koch
$9.95HK Heckler & Koch HK94, MP5 Spring - Firing Pin German Fits all of the MP5, SP5, SP5K, MP5K 9mm and 40/10 Variants including MP5, 94 clones. The firing pin is one of the most common repair and replacement items. Compatible...HKP-00062$9.95 -
HK MP5 Magazine - 32 Round - 9mm
Overwatch Precision
$29.95Overwatch Precision 32 Round MP5 Variants 9mm Magazine The Overwatch Precision Polymer magazine is a 32-round 9mm polymer mag for HK MP5, SP5K, MP5K, SP5K, and factory spec HK MP5,MP5K style clones. Its unique and custom feed lip and follower...HKP-20102-M$29.95 -
HK VP9, VP9SK Slide Cap - Enhanced
HKP HK Parts
$29.95Enhanced Slide Plate Cover VP9, VP9 Tactical, VP9SK & VP40 Enhanced HK VP9, VP40 Alloy Slide Plate. This enhanced model cover has no firing pin viewing window and is machined to cover as MUCH surface area as possible to seal the firearm from dirt and...HKP-17856$29.95 -
HK Oversized Barrel Retaining Pin - 5.25mm
H&K Heckler & Koch
$9.95H&K Oversized Barrel Retaining Pin - 5.25mm This is the barrel pin used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel in the trunnion. Each pin is slightly...HKP-16954$9.95 -
HK VP9, VP9SK, VP40 Enhanced Support Sleeve
HKP HK Parts
$14.95 - $19.95HKP HK VP9/VP40 Enhanced Support Sleeve The support sleeve in the VP series pistols is a crucial component that allows for the removal of the slide plate, firing pin assembly, and other parts. The factory version is made from polymer, which can wear down...HKP-18677-M$14.95 - $19.95 -
MFI Snap Sling Hook 1.25"
MFI
$4.95HK Style 1.25" Snap Hook For Sling This sling hook is designed for wider 1.25" width slings. Made in the USA, and is great for HK sling projects and spares. We offer the 1" and the 1.25" sling hooks for all your HK projects.HKP-01523$4.95 -
HK MP5, MP5K, G3, HK93 Mag Release - Paddle Style - Extended - EMR
HKP HK Parts
$44.95HKP Paddle Style Extended Mag Release - EMR A great addition to any paddle style mag release, such as those found on an HK. The extended mag release is machined from a solid billet of aircraft grade aluminum and hard anodized aluminum for a lightweight...HKP-17079$44.95 -
HK USP .45 ACP, Mark 23 +5 Magazine Extension
HKP HK Parts
$49.95HKP HK USP .45 ACP/Mark 23 +5 Magazine Extension Super easy to install, simply add the mag extension to your existing mag body and follower. An easy 2 minute swap, no gunsmithing needed. Made in the USA out of aircraft grade hard coat anodized aluminum...HKP-19493-M$49.95