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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HK Barrel Pin Retaining - 5mm - Standard Size
H&K Heckler & Koch
$9.95H&K HK Pin - Barrel - Retaining - 5mm - Standard Size Barrel Retaining Pin Each barrel pin is used for installing a new or replacement barrel. HK suggest using a new factory barrel pin when installing or reinstalling a HK barrel. We also offer the HK...HKP-00071$9.95 -
Armorer's Bench Block Tool
HKP HK Parts
$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...HKP-17133$14.95 -
HK MP5K, SP89, SP5K Vertical Foregrip - 9mm
H&K Heckler & Koch
$98.95HK German Factory MP5K & SP89, PDW Vertical "K" Grip The "K" Grip will also fit the MP5, HK94, and HK53 with the use of a K-Grip adapter (see below), all NFA rules apply. This uses the standard HK small push pin to attach to the cocking tube...HKP-00387$98.95 -
Out Of Stock
HK MP5, MP5K Optic Mount - Low Profile - Picatinny
MFI
$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...HKP-19266$124.95 -
Holex Feeler Gauge Set - 20 Piece - German
HKP HK Parts
$14.95Holex Feeler Gauge Set - 20 Piece - German The perfect companion tool for all HK roller lock firearm owners. Each tool includes 20 feeler gauges from .05mm-1.0mm in .05 increments. To help users and shooters maintain the factory recommended bolt gap...HKP-17212$14.95 -
HK91, G3 Parts Kit - RCM Barrel - PTR Receiver Flat
H&K Heckler & Koch
$588.95HK German G3 .308/7.62 X 51mm Surplus Parts Kit, Receiver Flat - RCM Barrel Finally, after more than 4 years of searching the globe we have HK German Surplus G3 parts kits available to offer. Each parts kit comes complete with all parts from a...HKP-16579$588.95 -
Out Of Stock
HK45, HK45 Tactical Magazine - 10 Round - .45 ACP
H&K Heckler & Koch
$59.95Heckler and Koch HK45 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 NOT compatible with...HKP-00958-M$59.95 -
HK416 Magazine - 50 Round Drum - .22LR - Translucent
BDM Black Dog Machine
$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: HK416 ...HKP-16236$99.95 -
Maglula Universal Magazine Loader
Maglula
$34.95Maglula Universal Magazine Loader The UpLULA mag loader is a military grade-quality universal pistol magazine loader and unloader designed for loading and unloading almost all 9mm Luger up to .45 ACP magazines, single and double stack, and 1911's of all...HKP-14531$34.95 -
Out Of Stock
HK Mark 23 Magazine - 12 Round - .45 ACP
H&K Heckler & Koch
$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 .45HKP-00295-M$64.95 -
HK VP9 Optic Plate #2 - Trijicon RMR, Holosun Swampfox - Red Dot Pistol Mount
H&K Heckler & Koch
$49.99Optics Plate #2 RMR - HK VP9, VP9L HK German steel optic plate for Triicon RMR patterned optics. Compatible With: HK VP9 OR, VP9 Tactical OR HK VP9L OR HK VP9 Match OR HK VP9SK OR HK VP9A1 K HK VP9A1 F **Plate only works with VP9 pistols with factory...HKP-19253$49.99 -
HK MP5, MP5K Magazine - 30 Round - LEO Marked
H&K Heckler & Koch
$94.95Heckler and Koch HK MP5, MP5K 30 Round Magazine with Reproduction LEO Marking Get the classic LEO-marked look without the cost of rare, surplus mags. Each magazine starts as a factory-fresh German HK 30-round mag and is professionally laser engraved...HKP-21354-M$94.95