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
HK45, UMP Flash Hider - 4 Prong - Threaded 16x1 - Left Hand
HKP HK Parts
Now: $59.95Was: $74.95HK Parts 4 Prong Flash Hider .45 ACP Threaded 16x1 LH Designed for all HK German .45 ACP threaded barrels, including full size and compact models. Made from heat treated ordnance grade steel with a melonite finish, it offers superior corrosion and...HKP-01017Now: $59.95Was: $74.95 -
HK416, MR556, MR762 Spring Lock Bolt
H&K Heckler & Koch
$9.99H&K HK MR556/MR762/416 Spring Lock Bolt Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-16848$9.99 -
On Sale
HK416, MR556, G36 Barrel Chamber Cleaning Brush
HKP HK Parts
Now: $19.95Was: $24.95HK G36 & HK SL8 German Chamber Cleaning Brush (Cleans INSIDE Chamber) More details...HKP-00803Now: $19.95Was: $24.95 -
On Sale
HK G36 Cocking Handle Bushing - USA
Now: $3.95Was: $5.95G36 Cocking Handle Bushing - US MadeHKP-18368Now: $3.95Was: $5.95 -
HK UMP Magazine - 25 Round - LEO Marked - Used
H&K Heckler & Koch
$149.95German HK UMP .45 25 Round Magazine - Used Used PD trade-in factory 25 round magazines with HK factory-marked LEO markings. Condition of used parts will vary. All used parts are sold AS-IS. Compatible With: HK UMP .45 ACPHKP-17917$149.95 -
HK UMP, USC, G36, SL8 Index Plate
H&K Heckler & Koch
$9.95HK Index Plate For All UMP, USC, G36, & SL8 Lowers Compatible With: HK UMP HK USC HK G36 HK SL8HKP-01860$9.95 -
Out Of Stock
$69.95 -
HK91, G3 Fixed Buttstock with Enhanced Heavy Buffer - Jungle Green - Surplus
H&K Heckler & Koch
$129.95HK 91, G3 Fixed Stock with Enhanced Heavy Buffer Installed- Jungle Green - Surplus Used jungle green German surplus stock complete with Enhanced Heavy Buffer Installed. Ready to drop in on your HK or clone rifle. Used in perfect working condition. Each...HKP-18935$129.95 -
On Sale
Harris Bipod Adapter - Long - Picatinny
HKP HK Parts
Now: $27.95Was: $34.95Harris Bipod Adapter This mounts to any Picatinny rail and proves a stable platform to add a Harris bipod or other similar-style bipod. This will fit any Picatinny spec rail or rail system. Made in the US out of aircraft-grade aluminum and steel.HKP-00909Now: $27.95Was: $34.95 -
HK MP5 Locking Piece #25 - 60 Degree - High Impulse - .40 S&W, 10mm
H&K Heckler & Koch
$229.95New HK German MP5 40 or MP5 10mm High Impulse Locking Piece Marked #25 This is the 60-degree locking piece that is used for high-impulse ammo, commonly found in +P or +P+ ammo. This locking piece is needed to cycle these hot loads without excessive...HKP-00437$229.95 -
On Sale
HK MP5, HK94 Cocking Tube - LH
HKP HK Parts
Now: $95.95Was: $119.95HKP MP5, HK94 Cocking Tube - For Lefties This is the one and only left handed cocking tube for the MP5/HK94 ever made and it happens to be a US manufactured part. Features include enlarged charging handle clamping pin access hole as found on the latest...HKP-17380Now: $95.95Was: $119.95 -
HK MP5, 94 Magazine Spring - 15 Round
H&K Heckler & Koch
$8.95HK German MP5, 94, SP89, MP5K 15 Round Magazine Spring Compatible with all 15 Round MP5 and 94 style curved magazines. This is a must-have repair and replacement part, great to have for spares.HKP-00090$8.95