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 PTR PDW Bolt Group - Complete
HKP HK Parts
Now: $341.95Was: $379.95US Made PTR Bolt Group Complete Semi-Auto 308. Factory correct bolt head and locking piece for use in the PTR PDW chambered in 7.62X51 or 308. Brand new May 2015 manufacture. This is the correct bolt for all PTR PDW with 8" barrels.HKP-17389Now: $341.95Was: $379.95 -
On Sale
HK91, G3, PTR Folding Stock
Choate
Now: $115.95Was: $144.95HK 91, G3, PTR Side Folding Stock No gunsmith is needed as this is an easy install using your hardware from your existing fixed A2 stock. This counts as one US-made compliant part. Compatible With: HK91 G3 PTR91 Also fits HK93 and 33-style rifles...HKP-00516Now: $115.95Was: $144.95 -
HK53 Front Sight Tower - Factory Correct
H&K Heckler & Koch
$169.95HK53 Front Sight Tower - (Triple Frame) This factory HK German triple frame is the factory-correct part for your HK53 build (not the incorrect G3/91 triple frame).HKP-02238$169.95 -
Out Of Stock
HK33, HK53, HK93 Cocking Lever Axle Pin
H&K Heckler & Koch
$0.00New HK German 93, 33, & 53 Cocking Handle Axle Pin This is a new HK factory part made for the .223 HK rifle for the HK93/33/53, not surplus or a cut-down .308 part, as others offer. This part is the axle pin that holds the cocking handle in place on...HKP-01060$0.00 -
HK MP5 Trigger Pack SEF - Semi-Auto - .40 S&W, 10mm
H&K Heckler & Koch
$269.95HK Parts and Heckler and Koch MP5 10mm and .40 S&W Semi-Auto SEF Complete Trigger Pack We have one of the best HK gunsmiths in the country who can take German HK F/A trigger packs and modify them to semi-auto. This is done with the best and most...HKP-00979$269.95 -
Out Of Stock
HK MP5K PDW Trigger Group, Complete - FBI - 9mm
H&K Heckler & Koch
$799.95HK Heckler and Koch 9mm Complete PDW FBI Trigger Group for HK MP5K This is a great upgrade and investment for your factory swing down MP5K or PDW (shown with an optional small push pin installed). New HK German with all the latest HK upgraded parts...HKP-02699$799.95 -
On Sale
Offset Picatinny Optic Mount - 45 Degree - Aimpoint Micro
B&T Brugger & Thomet
Now: $116.95Was: $129.95B&T Offset 45 Degree Mount For Aimpoint Micro - Picatinny In order to engage a target at close distance, a secondary optic without magnification is quite useful next to the primary scope, not only for snipers but also for dynamic rifle shooters. The...HKP-18045Now: $116.95Was: $129.95 -
HK MP5, HK91, G3, HK33, HK53, HK93 A3 Buttstock Locking Lever with Spring
H&K Heckler & Koch
$199.95HK MP5, HK91, G3, HK33/53/93 A3 Retractable Stock Locking Lever With Locking Spring Compatible With: MP5 (NOT compatible with MP5 .22 LR) HK G3, HK91 HK33, HK53, HK93HKP-02560$199.95 -
On Sale
HK91, G3 Buffer System - Enhanced
HKP HK Parts
Now: $77.95Was: $97.95HKP Enhanced Buffer System for HK91 and G3 HKP enhanced buffer system for HK91 and G3 pattern rifles. Built with a new steel buffer body, new buffer plunger, and a parkerized finish like factory units. This assembly is designed as an improved...HKP-22866Now: $77.95Was: $97.95 -
On Sale
HK MP5 Extractor Rebuild Kit - 9mm - RCM E Bolt Head
RCM
Now: $54.95Was: $64.95RCM Complete Extractor Rebuild Kit for MP5 E Bolt Heads - 9mm Complete extractor rebuild kit for RCM MP5 E bolt heads in 9mm. Made in the USA from steel, this kit is designed to refresh extractor-related wear components on compatible bolt heads and...HKP-22833Now: $54.95Was: $64.95 -
Out Of Stock
HK MR556 A4 Handguard - RAL8000
H&K Heckler & Koch
$279.95Heckler and Koch MR556 A4 Handguard - RAL8000 This 10" factory H&K MR556 A4 handguard offers a lightweight, free-floating design that enhances accuracy and provides rock-solid mounting for accessories. Made from high-strength aluminum, it features a...HKP-99491$279.95 -
On Sale
FSA Cheek Riser for Strike Folding Stock and Brace
Strike Industries
Now: $26.95Was: $29.95Strike Industries FSA Cheek Riser for Single or Dual Folding Stocks and Braces Adds an adjustable cheek rest for improved comfort and a more consistent cheek weld on Strick Industries single and dual folding stocks, stabilizers, and braces...HKP-22783Now: $26.95Was: $29.95