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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Out Of Stock
HK MP5K, SP5K ACR Stock with Adapter
Magpul
$579.95HK SP5K ACR Stock Our aircraft-grade aluminum SP5K ACR adapter is now offered in this combo stock unit. Pre-installed and ready to drop in. With this SP5K ACR combo stock you will add the capability of an adjustable cheek rest and length of pull...HKP-20826-M$579.95 -
HKP 2 Point Leather Sling - OD Green
HKP HK Parts
$49.95HKP 2 Point Leather Sling - OD Green These new HK Parts 2-point slings are based off of the original German HK design that are no longer offered. This is a 1st time offering, handcrafted by a German artisan. Made in the USA from quality leather and...HKP-20164$49.95 -
HK MP5K, SP5K Pistol Stabilizing Brace - SBA3 - 5 Position Adjustable
SB Tactical
$269.95SBA3 - 5 Position Adjustable Stabilizing Brace - MP5K / SP5K The perfect addition to your firearm with the ability to adjust length with its 5-position adjustable buffer tube. Dramatically enhances versatility, and features a minimalist design with an...HKP-20277$269.95 -
HK45, HK45T Magazine - .45 ACP - 13 Round - Red
HKP HK Parts
$89.9513 Round HK 45/45 Tactical .45 ACP Magazine - Red HK45 & HK45 Tactical +3 magazine extension coupled with a new HK German 10 round HK45 magazine. Each unit is then fully assembled as a 13 round HK45, HK45 Tactical magazine. Ideal for concealed carry,...HKP-18386$89.95 -
Out Of Stock
HK P30, P2000 Trigger Bar Detent Spring
H&K Heckler & Koch
$5.95HK P30 & P2000 Trigger Bar Detent Spring Compatible With These Models In 9mm, .40 S&W, & .357 SIG: HK P30 HK P30L HK P30SK HK P2000 HK P2000SKHKP-01799$5.95 -
HK G36, SL8 Bipod
H&K Heckler & Koch
$449.95New HK G36 & HK SL8 Factory Bipod Heckler & Koch German made. Manufactured with steel-reinforced HK composites. Compatible With: HK G36 HK SL8-6 Newer black rifles or the SL8-1 with a proper forearm HK G36K - Must be an early style that has a...HKP-00270$449.95 -
HK UMP, USC Firing Pin Assembly - Complete
H&K Heckler & Koch
$82.95HK German USC & UMP Firing Pin Assembly Complete A great spare to have on hand as this item is a hard-to-find replacement part. Compatible With: USC 45 UMP 45 UMP 40 UMP 9mm ALL USC Conversions ALL UMP MG'sHKP-00609$82.95 -
HK51, PTR PDW Fixed Stock
PTR
$299.95PTR Fixed Stock for HK51 and PTR PDW 7.62x39 and 7.62x51 / .308 Each stock is constructed of new U.S. & German HK parts. This stock also counts as one U.S. 922r compliant part. Perfect for those that have registered sears or want to SBR your...HKP-02408$299.95 -
HK MP5 Magazine Clamp - .40 S&W, 10mm
H&K Heckler & Koch
$129.95H&K Heckler and Koch New HK German Magazine Clamp for HK MP5 .40 S&W, 10mm, .357 SIG Fits all MP5 40,10 Magazines. Holds two magazines together for immediate access.HKP-00431$129.95 -
HK MP5, SP5K Buffer, Folding Stocks and End Caps
H&K Heckler & Koch
$24.95H&K MP5/SP5/MP5K/SP5K Replacement Buffer For Factory End Cap or Folding Stock This item is a Heckler & Koch Genuine Part, used to replace the factory HK buffer on MP5/SP5/MP5K/SP5K folding stocks and end caps. This is only usable on the factory...HKP-01233$24.95 -
HK MP5SD Locking Piece - 115 Degree - 9mm
H&K Heckler & Koch
$179.95HK German MP5SD Factory Locking Piece MP5 "action" SD locking piece is the current factory-correct locking piece for the MP5SD. For optimal results, use the action 3 or F bolt head for the most reliable feeding and extraction. These upgrades work...HKP-00135$179.95 -
HK Extended Right Side Ambidextrous Selector Lever
H&K Heckler & Koch
$59.95HK German Right Side Ambidextrous EXTENDED (ESSL) Lever New German HK extended selector lever for the right side of all ambidextrous trigger packs. Works with all ambi left side HK selector levers. Compatible With: MP5, 94 MP5 clone and custom...HKP-18875$59.95