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
HKP Armorers Bench Block Tool
HKP HK Parts
Now: $10.36Was: $14.95HK Parts Armorers Puck Punch Bench Block Tool For All HK Firearms The HK armorers' puck punch bench block tool is standard issue at all HK armorers' courses. The purpose of the tool is to aid in installing axle and roll pins in your firearm while...Now: $10.36Was: $14.95 -
On Sale
HK MP5, MP5K Bolt Group Backup Kit - Action 3
H&K Heckler & Koch
Now: $20.66Was: $22.95H&K MP5 Bolt Group Backup Kit - Action 3 This kit includes the highest wear and replace items on the MP5 action 3 bolt group, as well as the easy to lose pin. Includes: Factory German MP5 9mm Extractor Spring Factory German Action 3 Roller Retainer...Now: $20.66Was: $22.95 -
Out Of StockOn Sale
HK MP5, MP5K Optic Mount - Low Profile - Picatinny
MFI
Now: $112.45Was: $124.95Universal Low Profile Scope Mount for HK MP5K, SP5K This mount differs from our Regular 5.5" Long HK Low Scope Mounts in that it is slightly shorter in length and contoured at the front to allow more area between the cocking handle and the rail. This...Now: $112.45Was: $124.95 -
On Sale
HK45, VP, P30, USP Block Spring - Enhanced Firing Pin
Lazy Wolf
Now: $8.96Was: $9.95Lazy Wolf HK VP/P30/USP/HK45 Enhanced Firing Pin Block Spring An exciting and desirable new offering as a joint collaboration from the widely renowned Master HK pistol smith Lazy Wolf Guns & HK Parts! This spring was designed by master pistol smith...Now: $8.96Was: $9.95 -
Out Of StockOn Sale
HK VP9 O-Ring - Barrel - Thread Protector - Green
H&K Heckler & Koch
Now: $4.46Was: $4.95HK German 9mm barrel O-ring - Green For thread protector or barrel slot on the Elite barrel. The o-ring is a high wear and replacement item. Stock up at the lowest price in the country. To save even more order 10 or more and get an additional $1 off per...Now: $4.46Was: $4.95 -
Out Of StockOn Sale
HK Mark 23 Magazine - 12 Round - .45 ACP
H&K Heckler & Koch
Now: $58.46Was: $64.95HK German Mark 23 & SOCOM 12 Round .45 Cal Magazine New factory fresh German HK manufactured. The real deal steel-bodied factory fresh magazine with the upgraded maritime finish. Compatible With: HK Mark 23 SOCOM .45Now: $58.46Was: $64.95 -
On Sale
HK 416 Magazine - .22LR - 50 Round - Translucent
BDM Black Dog Machine
Now: $89.95Was: $99.95HK, Walther, Umarex HK416 50 Round - .22 LR Magazine Made in the USA by BDM exclusively for HK Parts. Using an existing drum model that is tried and true. This is the only drum ever to be offered for these firearms listed below. Compatible With: HK 416 ...Now: $89.95Was: $99.95 -
On Sale
HK MP5 Optic Mount - .22LR
MFI
Now: $98.95Was: $109.95Low Profile Scope Mount For All HK MP5 .22's (HK, Walther, & Umarex) & ATI GSG-5 Pistols Or Rifles Just released the latest second-generation MFI Low Profile Scope mount for the Umarex HK MP5 & GSG-5 models. MFI scope mount offers the lowest...Now: $98.95Was: $109.95 -
Out Of StockOn Sale
HK33, HK53, HK93 30 Round Magazine
AC-Unity
Now: $17.95Was: $19.95AC-Unity 30 Round HK33 Magazine The AC-Unity HK33 magazine is formed from an advanced polymer-resin/granulate that is lightweight and shock resistant. Metal parts are hardened and corrosion resistant. These magazines have a long lifespan, capable...Now: $17.95Was: $19.95 -
On Sale
HK MP5 Optic Mount - Minimalist Picatinny Rail
HKP HK Parts
Now: $78.36Was: $97.95HKP HK MP5 Minimalist Picatinny Rail Optic Mount Our new Picatinny style optic mount is a game changer for those who want a minimalist look on their MP5 or MP5K. You can have a Picatinny rail without compromising all the real estate that other...Now: $78.36Was: $97.95 -
HK Sling Loop For Front Sight Tower - 90s series
H&K Heckler & Koch
$39.95H&K Sling Loop For Front Sight Tower - 90s series This HK OEM item is brand new and not surplus or used. This is a must-have item for all of your re-barrel jobs, or for when you need to mount a sling loop to an HK build. This item is offered at the...$39.95 -
On Sale
HK 10 Round HK 45/45 Tactical .45 ACP Magazine
H&K Heckler & Koch
Now: $49.46Was: $54.95HK45 10 Round Magazine The HK45 is the newest .45 Caliber pistol HK manufactures. This is the largest mag capacity magazine available for the HK45 and HK45 Tactical pistol. Compatible With: HK45 HK45 Tactical Please Note: This will not fit the...Now: $49.46Was: $54.95