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 G36C Handguard Rail - Bottom - Extended
H&K Heckler & Koch
$99.95HK German Extended Bottom Rail for Handguard This part provides a full-length mounting rail along the entire bottom of the G36C Forearm. This item is factory HK and comes with all mounting hardware required for the installation.HKP-01648$99.95 -
On Sale
HK23E Saw Feed Box Adapter
Michaels Machines
Now: $239.95Was: $299.95Saw Box (M249) Adapter For HK23E Or MM23E Belt FedsHKP-02072Now: $239.95Was: $299.95 -
HK23E, HK13E, G43 Extractor - 7.62x51 / .308, 5.56 / .223
H&K Heckler & Koch
$119.95HK23E & HK13E Extractor New HK German and no longer in production. Compatible With: MM 23E HK 13EHKP-00818$119.95 -
On Sale
HK21E, HK23E, MSG90 Optic Mount - Picatinny Rail
Michaels Machines
Now: $618.95Was: $687.95HK21E/23E Or MSG90 Quick Release Full Picatinny Rail Scope Mount Rock-solid scope made in the USA to factory HK specs. Available exclusively at HK Parts. Please Note: These units are shipped in bulk and will have handling marks on the rails. Units are...HKP-01923Now: $618.95Was: $687.95 -
On Sale
HK91, G3 Firing Pin - Titanium
HKP HK Parts
Now: $27.95Was: $34.95HK G3, 91 & PTR Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made 100% in the USA. A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK G3, 91 & PTR weapon system. Get the...HKP-17937Now: $27.95Was: $34.95 -
HK33, HK53, HK93 Trigger Group - 5 U.S. 922r Parts
PTR
$389.95HK 93,33,53 5.56/.223 Semi Auto Trigger Group Complete The components that count towards 5 of the 922r compliant parts include the lower housing, trigger pack box, trigger, hammer, and sear. Includes: US Made Sear US Made Hammer US Made Trigger US Made...HKP-16259$389.95 -
On Sale
Ergo M-LOK Harris Bipod Mount
Ergo
Now: $27.95Was: $33.95M-LOK Harris Style Bipod Mount Features: Contoured to fit Harris-style bipods Black anodized 6061-T6 alum.HKP-17851Now: $27.95Was: $33.95 -
Out Of Stock
MLOK LINK Rail Section - 7 Slots - QD
Strike Industries
$25.95Strike Industries M-LOK & Key Mod Universal Rail - 7 Slots Strike Industries LINK attachment system takes the age old question Key-Mod vs. M-LOK and came up with the ultimate solution, a dual interface design compatible with both M-LOK and Key-Mod,...HKP-17594$25.95 -
HK94 Owners Manual - Red
H&K Heckler & Koch
$18.95Heckler and Koch HK94 Owners Manual - Red Original-style HK94 owner’s manual in red. Ideal for HK94 and other HK semi-auto platforms, and a useful reference for basic operation, maintenance, and safety information. Compatible...HKP-00105$18.95 -
Out Of Stock
HK MP5K, SP89, SP5K Stock or Brace Adapter - ACE Style
HKP HK Parts
$54.95ACE Adapter for MP5K, SP89 & SP5K Each ACE adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct "H" buffers to protect your expensive firearm. This is the finest ACE adapter...HKP-18505$54.95 -
On Sale
HK MP5 Selector Lever Conversion Set - 4 Position Burst To 0,1
H&K Heckler & Koch
Now: $129.95Was: $179.95HK 4 Position Burst To Semi ONLY Conversion Selector Lever Set - German HK The German HK selector lever set will allow the use to convert the following: 0,1,3,F Trigger packs 0,1,2,F Trigger packs To safe, semi only as far as the way the selector...HKP-17996Now: $129.95Was: $179.95 -
On Sale
Ergo 1 1/2" Harris Bipod Slide Mount With Sling Stud
Ergo
Now: $16.95Was: $19.95Ergo 1 1/2" Harris Bipod Slide Mount With Sling Stud The ERGO 1.5" Bipod Slide Mount slides onto 1913 Picatinny rail, allowing shooters to mount a variety of rail accessories, including swivels or bipods. Features: Slides onto Picatinny rails and held...HKP-15737Now: $16.95Was: $19.95