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
HK 90 Series Pistol Grip Parts Storage Holder
HKP HK Parts
Now: $23.95Was: $29.95HK Pistol Grip Parts Storage Holder - SEF & Ambidextrous Housings A must-have item for storage, it doesn't have a battery compartment to maximize storage. This HK grip plug will fit all SEF or Ambidextrous housings that have the holding tabs in the...HKP-19452Now: $23.95Was: $29.95 -
On Sale
HK VP9, VP9SK Slide Cap - Enhanced
HKP HK Parts
Now: $23.95Was: $29.95Enhanced Slide Plate Cover VP9, VP9 Tactical, VP9SK & VP40 Enhanced HK VP9, VP40 Alloy Slide Plate. This enhanced model cover has no firing pin viewing window and is machined to cover as MUCH surface area as possible to seal the firearm from dirt...HKP-17856Now: $23.95Was: $29.95 -
On Sale
HK MP5, HK94, SP5 Stock - SL
Magpul
Now: $143.95Was: $159.95Magpul - SL Stock - MP5, SP5 The Magpul SL Stock HK94/MP5, SP5 delivers the modern qualities found in our original MOE SL® carbine stock for AR15/M4 carbines to MP5-pattern rifles. Durable, lightweight, and collapsible, the SL incorporates Magpul...HKP-20023Now: $143.95Was: $159.95 -
On Sale
HK MP5, HK94 Firing Pin Spring - Enhanced
HKP HK Parts
Now: $3.95Was: $4.95MP5 & HK94 Firing Pin Spring - Enhanced The "Enhanced" firing pin spring was analyzed and engineered from scratch with the latest in performance spring technology and an emphasis on reducing stress on the spring and increasing cycle life by 500%...HKP-02321Now: $3.95Was: $4.95 -
HK MP5K, SP89, SP5K Folding Buttstock - 9mm - HK Marked
H&K Heckler & Koch
$399.95HK Marked MP5K, SP5K, SP89 & MP5K-N, PDW Folding Stock This is the original "HK" logo marked HK factory stock, found on all HK German MP5K's or PDW's. Each stock is marked HK and uses the HK German backplate/buffer factory assembly. Overall Length is...HKP-00391$399.95 -
On Sale
HK VP9, VP40 Magazine Release - Enhanced - Gen 2
HKP HK Parts
$39.95 - $49.95Enhanced Magazine Release - Alloy - HK VP Series - Gen 2 - New & Improved The oversized magazine release increases the overall surface area and makes it possible to release the magazine without changing the position of your grip. Made in the...HKP-21098-M$39.95 - $49.95 -
On Sale
HK MP5, MP5K Cocking Handle - BLEMISHED
HKP HK Parts
Now: $4.95Was: $9.95HKP MP5, MP5K Cocking Handle - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Each new US-made cocking handle is an exact copy of the...HKP-00653-BNow: $4.95Was: $9.95 -
On Sale
HK MP5, SP5, MP5K, SP5K Magazine - 32 Round - 9mm
Overwatch Precision
$24.95 - $26.95Overwatch Precision 32 Round MP5 Variants 9mm Magazine The Overwatch Precision Polymer magazine is a 32-round 9mm polymer mag for HK MP5, SP5K, MP5K, SP5K, and factory spec HK MP5,MP5K style clones. Its unique and custom feed lip and follower...HKP-20102-M$24.95 - $26.95 -
HK USP9 Jet Funnel Magazine - 18 Round
H&K Heckler & Koch
$99.95Heckler and Koch 9mm 18 Round Jet Funnel Magazine for HK USP New style all black steel reinforced Jet Funnel 18 round USP 9mm magazine. This item can be used with or without the jet funnel magwell installed. Compatible With: USP USP...HKP-14549-M$99.95 -
On Sale
HK MP5 Poster - Parts Diagram
H&K Heckler & Koch
Now: $4.95Was: $14.95H&K HK MP5 Parts Diagram Poster Factory HK German print of the MP5 breakdown of the iconic MP5. Specifications: Height - 24" Width - 36"HKP-16690Now: $4.95Was: $14.95 -
Out Of Stock
HK MP5K, SP5K Telescopic Stock - 9mm - B&T
B&T Brugger & Thomet
$665.00B&T Telescopic Stock - HK MP5K, SP5K B&T Telescopic 5 position retractable stock for HK SP5K/MP5K and clones Compatible With: MP5K, SP5K style of firearms Specifications: Length adjustable in 5 positions Includes replaceable Elastomer bufferHKP-19862$665.00 -
HK Oversized Barrel Retaining Pin - 5.25mm
H&K Heckler & Koch
$9.95H&K Oversized Barrel Retaining Pin - 5.25mm This is the barrel pin used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel in the trunnion. Each pin is slightly...HKP-16954$9.95