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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HK33, HK53, HK93 Stock or Brace Adapter - AR-15 Style
HKP HK Parts
$199.95HKP HK 93/53/33 (5.56/.223) AR-15 Style Brace/Stock Adapter PTR Manufactured AR15 to HK 93,33,53 series stock adopter assembly. Each adopter unit will allow the use of AR15 stocks on your HK...HKP-16255$199.95 -
HK MP5K Weldment Set, Complete
$59.95MP5K Complete Weldment Set Each set of weldments is all of the weldments required for an MP5K flat. Includes: Rear sight baseHKP-16231$59.95 -
On Sale
HK MP5 Trigger Group - SEF Full Auto - Contoured- USED
H&K Heckler & Koch
Now: $513.71Was: $999.95HK Heckler and Koch German SEF Full Auto Trigger Group in USED condition for HK MP5 Used MP5 contoured SEF trigger group that is 100% functional and entirely authentic German HK. This German MP5,...HKP-13932Now: $513.71Was: $999.95 -
On Sale
HK UMP, USC Optic Rail - Picatinny
H&K Heckler & Koch
Now: $17.95Was: $19.95HK UMP, USC Optic Rail - Picatinny Factory HK UMP and USC Picatinny machined aluminum optic rail with mounting hardware. Compatible With: HK UMP, USCHKP-22541Now: $17.95Was: $19.95 -
Out Of Stock
HK VP9, P30 Magazine Base Pad - Hard Duty
Grayguns
$22.00The Grayguns HK VP9 and P30 Magazine Base Pads are designed for hard-duty use. The base pads are manufactured from 6061 Aluminum and professionally finished with MIL-A-8625 Type III anodized coating...HKP-22344$22.00 -
HK33, HK53, HK93, HK21E, 23E Cocking Handle Pivot Pin
H&K Heckler & Koch
$18.95H&K 93/53/33 & HK21E/23E Cocking Handle Pivot Pin This genuine H&K cocking handle pivot pin allows smooth operation of the charging handle assembly. While the nipple on the 21E pin is slightly...HKP-21746$18.95 -
B&T Blast Deflector - A2 NATO Interface
B&T Brugger & Thomet
$300.00B&T Blast Deflector - A2 NATO Interface This blast deflector is designed for NATO style A2 ("birdcage") flash hiders. Offering a universal fit for 5.56 rifles featuring the standard A2 flash hider...HKP-21777$300.00 -
Out Of Stock
B&T APC10, SPC10 Magazine - 30 Round
B&T Brugger & Thomet
$100.00B&T 30 Round APC10/SPC10 Magazine - 10mm Compatible with any G pattern 10mm B&T firearm. Compatible With: B&T APC10 B&HKP-21720$100.00 -
Suppressor Cleaner Evolution - 500ml
SchleTek
$38.00SchleTek Suppressor Cleaner Evolution 500ml A highly effective, easy-to-use cleaner for all suppressor types. Its self-active formula tackles stubborn fouling quickly, eliminating laborous cleaning...HKP-21715$38.00 -
HK VP9SK, P30SK +5 Magazine Extension Kit
HKP HK Parts
$34.95Magazine Extension Kit +5 - HK VP9SK, HK P30SK HK Parts magazine extension kit adds 5 additional rounds to the HK VP9SK/P30SK magazine with the simple swap of the floor plate & high-reliability mag...HKP-20566-M$34.95 -
HK416, MR556 Barrel - 5.56 - 10.4" - Threaded 1/2"x28 - A3
Nefarious Arms
$594.95Nefarious Arms HK 416/MR556 10.4" A3 Barrel ***THE BARREL EXTENSION RIM IS MARKED "HAUS" DUE TO AN ERROR BY THE BARREL EXTENSION SUPPLIER. THE MARKING IS NOT VISIBLE ONCE INSTALLED. THESE BARRELS...HKP-21335$594.95 -
On Sale
HK91, G3 Stock - PRS Gen 3
Magpul
$274.09 - $429.95Magpul HK G3 / HK 91 PRS Gen 3 Stock - Available in Multiple Color Options The PRS GEN3 is a field precision stock for AR15/M16 and AR10/SR25 platforms, featuring tool-less length of pull and cheek...HKP-21172-M$274.09 - $429.95