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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HK417, MR762 Ejection Port Cover
H&K Heckler & Koch
$42.95H&K HK MR762/417 Ejection Port Cover New HK German polymer .308 style MR762, HK 417 & G28 firearms. Compatible With: HK MR762 HK 417 HK G28 Other HK Spec .308 firearmsHKP-16598-M$42.95 -
Out Of Stock
HK417, MR762 Firing Pin - Titanium
HKP HK Parts
$49.95HK MR762 & HK417 Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made in the USA. A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK MR 762 & HK417 weapon system. Get the...HKP-17768$49.95 -
HK USP Expert Barrel - .40 ACP - 5.19"
H&K Heckler & Koch
$639.95New HK German Factory USP Expert .40 Barrel This barrel will fit a stock USP .40 full-size pistol but will extend out the front of the slide for those who want to use a Comp Weight? or need a longer barrel for the USP .40 firearm. Made in Germany with a...HKP-01472$639.95 -
HK USP Compact Barrel - .40 S&W - 3.58"
H&K Heckler & Koch
$234.95HK USP Compact .40 S&W Barrel - 3.58" Overall Barrel Length A drop-in replacement barrel for all HK USPC .40 or .357 pistols. This is a great spare or replacement barrel. This is a must-have if you want to convert your .357 USPC to .40 cal...HKP-01413$234.95 -
HK45 Compact LEM Hammer Spring
H&K Heckler & Koch
$9.95Hammer Spring For HK 45C LEM Models This hammer spring is the factory correct LEM hammer spring for the HK45C and HK45CT. This is the spring needed to use any other variant of LEM kit to be complete to be used on the HK45C pistol. This is also a great...HKP-15789$9.95 -
Out Of Stock
HK45, HK45 Compact V4 LH Decock Only Lever
H&K Heckler & Koch
$29.95HK 45 & 45C V4 LH Decock Only Lever The V4 lever is for the right side of the frame for a left-handed shooter. This lever is to be used in conjunction with the V3/4 detent plate found below. Detent...HKP-02707$29.95 -
HK45, HK45 Compact Extractor
H&K Heckler & Koch
$49.95German HK45 & HK45C Extractor - New A great spare and replacement part to have. Compatible With: HK45 Tactical HK45 HK45 Compact Tactical HK45 CompactHKP-01298$49.95 -
HK Mark 23 Slide Release Lever
H&K Heckler & Koch
$82.99HK Mark 23 Slide Release Lever Brand new HK German manufacture. Compatible with all HK Mark 23 and SOCOM Pistols.HKP-01596$82.99 -
On Sale
HK P30L Tactical Barrel - .40 S&W - 4.45" - Threaded 14.5x1 LH
RCM
Now: $190.95Was: $225.00RCM HK P30L .40 S&W Tactical Barrel - Threaded 14.5x1 LH Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest threaded replacement barrel for the HK P30L ...HKP-16220Now: $190.95Was: $225.00 -
On Sale
HK P2000 Tactical Barrel - .40 S&W - 4.28" - Threaded 9/16x24 RH
RCM
Now: $179.95Was: $225.00RCM HK P2000 .40 S&W Tactical Barrel - Threaded 9/16x24 RH Each P2000 .40 S&W tactical barrel is crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. It is the finest threaded replacement barrel available...HKP-16709Now: $179.95Was: $225.00 -
HK USP Compact Variant 4 Right Decock Control Lever
H&K Heckler & Koch
$34.95USPC - Decock Lever V4 - Decock Only Compatible with all USP Compact pistols and provides the V4 Decock ONLY (no safety function) when used with the Variant 3 & 4 Detent Plate. This is the correct lever for those who are "left-handed"...HKP-02264$34.95 -
HK USP Series Front Sight 7.4mm
H&K Heckler & Koch
$19.95H&K HK USP Series Front Sight 7.4mm Compatible With: HK USP 9mm HK USP 40 S&W HK USP 45 ACP HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK USP Compact 45 ACP HK USP Compact LEMHKP-16548$19.95