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 USC Magazine Spring
H&K Heckler & Koch
$8.95H&K USC (.45 ACP) 10 Round Factory Magazine Spring Compatible With: HK USC 10 Round magazinesHKP-15284$8.95 -
HK21E, HK23E, 11E Locking Piece #9 - 40 Degree
H&K Heckler & Koch
$149.95New HK German #9 Locking Piece The number 9 locking piece is 40 degrees. This will work with both .223 & .308 firearms and for custom builds and applications. This item is no longer available from HK and is out of production. Compatible With:...HKP-00548$149.95 -
HK91, G3, HK33, HK53, HK93 Blank Firing Barrel Adapter - Threaded 15x1 RH
H&K Heckler & Koch
$39.95Heckler and Koch Blank Firing Adapter for HK Rifle Barrels 5.56 / .223 and 7.62x51 / .308) German blank firing adapter used from the German military. Best quality and price in the country by the best makers of US made HK components available anywhere...HKP-15593$39.95 -
HK MP5K, SP89 Trigger Housing - SEF Navy - Clipped and Pinned
H&K Heckler & Koch
$199.95H&K MP5K/SP89 9mm SEF Navy Style Trigger Housing - Clipped & Pinned Each housing is clipped & pinned for the semi-auto shelf of the HK MP5K builds or SP89 firearms. Specifications: Made In Germany Clipped & Pinned SEF Pictogram...HKP-00407$199.95 -
Out Of Stock
HK MP5SD Barrel - 9mm - Threaded 18x1
HKP HK Parts
$169.95HKP MP5SD 9mm Barrel - Threaded 18x1 Made in the USA from 416 stainless steel, this high-quality barrel undergoes the highly desirable nitride process for a super hard, durable finish. Precision milled to the latest specifications, it features...HKP-17755$169.95 -
HK MP5, SP5 A1 Sling Swivel End Cap
H&K Heckler & Koch
$139.99HK German MP5 & SP5 A1 End Cap With Sling Swivel The MP5 end cap allows the user to add a single-point sling. Perfect for a pistol build or a lower profile setup. Made by HK Germany. Compatible With: HK MP5 HK SP5 HK94 MP5 clones and other...HKP-00114$139.99 -
HK Trigger Pack Housing - Semi 0,1
H&K Heckler & Koch
$129.95H&K 2 Position (0,1) Semi-Auto Trigger Pack Housing This trigger pack housing is professionally converted to semi-auto with all legal and correct modifications, including a semi-sear hole and trigger stop. It is designed to provide reliable...HKP-02177$129.95 -
On Sale
HK91, G3, PTR Magazine - 20 Round - Steel - USED
Rheinmetall
Now: $24.95Was: $34.95Rheinmetall HK91, G3, PTR Magazine - 20 Round - Steel - USED VARYING CONDITION SHOWN - SOLD INDIVIDUALLY DENTS AND PITTING USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. G3 steel mags were made for the...HKP-22495-USEDNow: $24.95Was: $34.95 -
Out Of Stock
HK VP9 Optic Plate - Holosun K, Shield RMSc - Optics Ready - Red Dot Pistol Mount
H&K Heckler & Koch
$50.95Heckler and Koch Holosun K Optics plate for VP9 OR Models Genuine Heckler and Koch optics plate for HK VP9 Optics Ready (VP9OR) pistols. Use factory filler plate screws to install. Specifications: Made in Germany Steel Optics plate only...HKP-22381$50.95 -
HK MP5, SP5 Faux Suppressor - KAC Style - 1/2x28
MFI
$138.95HK MP5, SP5 KAC Style Faux Suppressor - 1/2x28 The MFI faux KAC-Navy suppressor is designed to thread onto any 1/2x28 barrels and fully enclose the 3-lugs, ensuring an authentic looking fit and finish. Inspired from the coveted KAC MP5N suppressor, this...HKP-22363$138.95 -
HK Receiver Flat Bending Set Jig - RENTAL
HKP HK Parts
$99.95Flat Bending Jig Set For All HK Style Receiver Flats - RENTAL Receiver flat bending jig RENTAL for all HK receiver flats. Our rental jigs are crafted in the US from billeted steel and include the latest revisions with proper dowel spacing for the...HKP-19595-RENTAL$99.95 -
HK45, USP Magazine Spring - Extended
HKP HK Parts
$11.95HK45/USP Extended Magazine Spring .45 ACP Replacement spring for +7 and +10 HK Parts magazine extensions. Compatible With: HK45/HK45 Compact HK USPHKP-22299$11.95