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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HK416, MR556 Magazine - 30 Round - Maritime - Leo Marked
H&K Heckler & Koch
$89.95Heckler and Koch HK416, MR556 30-Round LEO Laser-Engraved Maritime Magazine Factory HK 30-round Maritime magazine for the HK416, MR223, MR556, and AR-15/M16 platforms. Designed to provide reliable ammunition feeding for NATO-standard .223/5.56...HKP-22886$89.95 -
HK MP5, MP5K Extractor - 9mm - Enhanced
HKP HK Parts
$34.95HK MP5, MP5K 9mm Extractor - Latest Generation Style HK Parts offers the finest US made 9mm "F" type extractor for all HK MP5/94 bolt heads. CNC'd from a solid billet of ordnance grade steel for superior function & durability. Each 9mm extractor has...HKP-01968$34.95 -
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 MP5K, SP5K Stock - Retractable - KES
Safety Harbor Firearms
$279.99KES HK MP5K Stock The KES MP5K retractable stock installs quickly using the factory receiver pins. The single deployment button allows the user to adjust the stock to their desired length instantly. Specifications: Guide rods...HKP-21087$279.99 -
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 -
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 -
Barrel O-Ring - .45 ACP
H&K Heckler & Koch
$4.95Heckler and Koch .45 ACP Caliber Barrel O-Ring in Black A great spare and a much-needed part for your HK barrel. This factory part is a high-wear item, as the O-ring provides the seal between the slide and the barrel, which provides a secure lockup with...HKP-00296$4.95 -
HK Recoil Rod Guide Ring - Recoil Rod Assemblies - Enhanced
HKP HK Parts
$2.39HKP Recoil Rod Guide Ring For Recoil Rod Assemblies - Enhanced New enhanced material for greater longevity and durability. Our US made recoil rod guides are the made from the strongest most durable material available much better than the basic nylon as...HKP-17829$2.39 -
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 -
On Sale
HK VP9, P30 Magazine Extension Kit - +5 Round
HKP HK Parts
$28.66 - $54.95HK Magazine Extension +5 Capacity For HK VP9, VP40 & P30, P30L The new and improved Gen 2 Model is now shipping! HK Parts magazine extension +5 kit adds five additional rounds to the HK VP9/P30 magazine with the simple swap of the floor plate and...HKP-21108-M$28.66 - $54.95 -
HK MP5, SP5 Enhanced Selector Kit - Polymer and SL Grips
Magpul
$47.95Magpul Industries HK MP5/SP5 Enhanced Selector Set The Magpul ESK (Enhanced Selector Kit) offers a versatile range of selector levers specifically designed for the Magpul SL Grip Module and HK Polymer Trigger Housings. The ESK delivers a modular,...HKP-19308$47.95