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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Out Of Stock
HK UMP, USC & G36, SL8 Sear
HKP HK Parts
$14.95HK Complete Sear G36, UMP, USC, SL8 Made in the USA Compatible With: HK UMP HK USC HK G36 HK SL8HKP-19555$14.95 -
HK USP Compact 9mm Stripped Slide
H&K Heckler & Koch
$474.95USP Compact - 9mm - Stripped New factory original slide for the 9mm semi-auto pistol. Features a black finish and factory markings. Stripped, no other parts included. No longer available by itself.HKP-19513$474.95 -
HK417, MR762 Enhanced Buffer Tube
H&K Heckler & Koch
$134.95H&K HK MR762/417 Enhanced Buffer Tube/Receiver Extension - Black Brand new factory HK German manufactured MR762, MR308, & HK 417 buffer tube. Compatible With: HK MR762 HK 417HKP-16770$134.95 -
HK417, MR762 Handguard Compression Spring
H&K Heckler & Koch
$8.95H&K HK MR762/417 Handguard Compression Spring Heckler & Koch compression spring for HK MR762 and HK 417 handguard Compatible With: HK MR 762 HK 417HKP-16796$8.95 -
$24.95 -
HK USP Magazine Housing - .40 S&W - 10 Round
H&K Heckler & Koch
$24.95HK German Full Size USP .40 10 Round Magazine Housing New HK German USP .40 Mag Body - 10 Round USP .40 Full SizeHKP-16543$24.95 -
HK Mark 23 Trigger Bar Spring
H&K Heckler & Koch
$47.95Heckler and Koch HK Mark 23 Trigger Bar Spring Replacement trigger bar spring designed for the HK Mark 23 pistol. Intended for maintenance or repair of compatible trigger assemblies to ensure proper function and reset. Compatible With: Mark 23HKP-01583$47.95 -
$7.95 -
Out Of Stock
HK Mark 23 7.5mm +6 Rear Sight
H&K Heckler & Koch
$64.95HK Mark 23 Rear Sight 7.5 mm 6.7mm - +2mm Other Rear Sight Heights: 5.5mm (-8) 5.9mm (-4) 6.3mm (standard) 6.7mm (+2) 7.1mm (+4) 7.5mm (+6)HKP-02599$64.95 -
HK Mark 23 Secondary Recoil Compression Spring
H&K Heckler & Koch
$19.95H&K HK Mark 23 Secondary Recoil Compression SpringHKP-16642$19.95 -
$10.95 -
$13.95