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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HK45 Series, P30 Series Grip Pin - Cylindrical
H&K Heckler & Koch
$5.95H&K P30 & 45 Series Cylindrical Grip Pin Compatible With: HK 45 HK 45 Compact HKHKP-01808$5.95 -
Out Of Stock
HK33, HK93 Handguard - M-LOK
MI Midwest Industries
$175.95MI HK93/33 M-LOK Handguard Brand new Midwest Industries M-LOK handguard for your HK93, HK33, G3K or similar clone. This is also the correct forearm to use on PTR models that use a shorter 9" length...HKP-18440$175.95 -
On Sale
HK MR556, MR762 H-Key 14 Rail Segment
HKP HK Parts
Now: $13.46Was: $39.95HKP HK MR556/CR556/MR762 H-Key 14 Rail Segment 14 slot rail segment for the new "HKey" style forearms. This rail section is designed to fit and attach to any of the new HKey style forearms now being...HKP-17846Now: $13.46Was: $39.95 -
HK416, MR556 Charging Handle Release Latch
H&K Heckler & Koch
$39.95Heckler and Koch HK MR556/416 Charging Handle Release Latch Perfect replacement item for the MR556 and HK 416 charging handle. New HK German manufacture. These can become chewed up and damaged with a...HKP-16553$39.95 -
$5.95 -
HK UMP Magazine - .40 S&W - 15 Round
HKP HK Parts
$49.95UMP, SMG .40 Cal 15 Round Magazine - US ***Shown side by side with a standard capacity magazine Compact 15 round magazine for HK UMP .40 caliber carbines, SMG's, and USC-UMP .40 caliber conversions...HKP-17584$49.95 -
On Sale
HK UMP Barrel - 9mm - Threaded 1/2x28 with 3 Lug - US
HKP HK Parts
Now: $191.22Was: $299.95HKP HK UMP 9mm Barrel - Threaded 1/2x28 - 3-lug HKP UMP 3-lug 1/2x28 threaded barrel. This is the perfect replacement for a worn out barrel or as a spare. With the 3-lug attachment point you can...HKP-18639Now: $191.22Was: $299.95 -
HK MP5 Locking Roller +6 - .40 S&W
HKP HK Parts
$11.95HK US MP540 Locking Roller, +6 The proper roller size is essential for proper headspacing of bolt gap. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt...HKP-17565$11.95 -
HK MP5 Trunnion - .40 S&W, 10mm
HKP HK Parts
$139.95MP5 40 & MP5 10mm Trunnion Machined from ordnance-grade steel and heat-treated to factory specs. Each has the bullet guides pre-installed and included. These are the best USA-made trunnions on the...HKP-02737$139.95 -
HK MP5, HK94 Trigger Group - SEF Navy Semi Auto - Clipped and Pinned
H&K Heckler & Koch
$599.95HK Heckler and Koch German SEF Navy Style Semi-Auto Clipped and Pinned Trigger Group Complete for HK MP5 and HK94 Ready to drop on your semi-auto HK 9mm HK Or Clone firearm or upper receiver...HKP-01179$599.95 -
On Sale
HK VP9 Rail Mount Compensator
HKP HK Parts
Now: $65.96Was: $179.95HKP HK Parts Rail Mount Compensator for HK VP9 THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS FINAL. *DO NOT USE COMPENSATOR WITH A THREAD PROTECTOR INSTALLED ON THE...HKP-99796Now: $65.96Was: $179.95 -
HK416, MR556 C.A.R.L. - 2, 3, or 6 Round Interchangeable Cam Limiter
ST Inc
$55.00ST Inc Limiter Cam for HK416, MR556 ARC-Fire CARL Lever - 2, 3, and 6 Round Options Limiter cam for the ST Inc CARL lever used with the HK416 and MR556 ARC-Fire trigger setup. Available in 2, 3, and...HKP-22565-M$55.00