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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Meprolight HK USPC Tru-Dot Night Sights - Orange/Green
Meprolight
$97.95Meprolight HK USPC Tru-Dot Night Sights - Orange/Green Features: Unequaled Light Performance Brightest Night Sights Available Today Used by Military & Law Enforcement All Tru-Dot sights are covered by a 12-year usable illumination warranty to the...HKP-01909$97.95 -
Out Of Stock
HK SL8, G36 Bolt Hold Open Lever - Extended
H&K Heckler & Koch
$69.95HK SL8 & G36 Extended Bolt Hold Open Lever New HK German SL8, G36, HK243 bolt hold open lever. A must have upgrade for your HK SL8, Sl8-G36 conversion or G36 firearm. The HK bolt hold open lever is a drop in replacement and requires zero gunsmithing...HKP-17719$69.95 -
HK UMP Magazine Spring - .40 S&W - 30 Round
H&K Heckler & Koch
$8.95HK UMP .40 30 Round Magazine Spring Perfect for spares and to have on hand as these are consumable high-wear items. Compatible With: HK UMP .40HKP-02742$8.95 -
On Sale
HK91, G3 Complete Bolt Head - Enfield HK Contract - Used
H&K Heckler & Koch
Now: $129.95Was: $179.95HK G3 & HK 91 & PTR Bolt Head Complete - British Enfield - Exc/Like New Made On HK tooling & prints in the Enfield factory in Britain in 1988. Each bolt head is complete with the bolt head parts installed & 100% functional. Removed from...HKP-18423Now: $129.95Was: $179.95 -
HK MP5, MP5K Bolt Carrier Stop Pin and Axle Set
H&K Heckler & Koch
$14.95MP5 & MP5K Stop Pin, Axle Set For Bolt Carrier Each set is designed to keep the locking piece clocked at the correct location and in place when the stop axle and pin set are installed in the carrier. This item can become damaged...HKP-02558$14.95 -
HK MR556, MR762 A4 Safety Lever - Right
H&K Heckler & Koch
$13.95H&K MR556/MR762 A4 Safety Lever - Right H&K factory right-side selector lever for MR-series ambidextrous safety systems. Compatible With: HK MR762 A1/A4 HK MR556 A1/A4HKP-21966$13.95 -
HK MR556, MR762 A4 Safety Lever - Left
H&K Heckler & Koch
$12.95H&K MR556/MR762 A4 Safety Lever - Left Left-side selector lever for MR-series ambidextrous safety systems. Compatible With: HK MR762 A1/A4 HK MR556 A1/A4HKP-21965$12.95 -
HK MP5 Flash Hider - .22LR
HKP HK Parts
$49.95HKP HK MP5 .22LR Flash Hider Transform your HK MP5 .22 pistol by adding a direct thread-on flash hider that perfectly replicates the iconic look of the MP5 9mm 3-lug flash hider. Internal O-ring to ensure a secure engament that wont allow the flash...HKP-21648$49.95 -
HK416, MR556, HK417, MR762 Pistol Grip with Tools - RAL8000
H&K Heckler & Koch
$159.95Heckler and Koch's Pistol Grip With Tools - RAL 8000 HK German grip with HK tools stowed in the grip's storage compartment. Finish your HK build with our favorite grip or upgrade your AR-15 platform. Compatible With: HK 416 HK MR556 HK417 HK...HKP-21462$159.95 -
HK417, MR762, G28 Castle Nut for Buffer Tube - Extended
H&K Heckler & Koch
$85.95HK G28 Buffer Tube Castle Nut New HK German G28 castle nut for the HK MR762, HK417 & G28 models. Black in color. This is the proper part for use with the G28 buffer tube and stock upgrades. Compatible With: HK MR762 HK 417 HK G28 DMRHKP-16763$85.95 -
On Sale
HK USPC Holster - Paddle - SIGTAC - RH
Itac Defense
Now: $19.95Was: $39.95ITAC Defense HK USPC SIGTAC RH Paddle Holster Made of durable, high-tech black polymer. These right-handed holsters use a unique patented retention system with a zero time to disengage feature. Simply depressing the lever allows for instant removal of...HKP-01972Now: $19.95Was: $39.95 -
HK33, HK53, HK93 Locking Piece # 7 - 55 Degree
RCM
$49.95RCM HK 93/53/33 # 7 Locking Piece 55 Degree New 55 Degree #7 Locking Piece for the HK 93, 33, C93 & V93 rifles. Made in the USA from ordnance grade steel, heat treated and made to last. A perfect upgrade for your well used or questionable locking...HKP-16556$49.95