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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Out Of StockOn Sale
HKP Mouse Pad, Mini-Mat - Bundesadler
HKP HK Parts
Now: $10.95Was: $12.99HKP Mouse Pad - Bundesadler - Non-Slip Features stitched edges and a non-slip rubber base. Great as a mouse pad or a mini gun mat. Specifications: 9.84" Long x 8.27" WideHKP-21846Now: $10.95Was: $12.99 -
Out Of StockOn Sale
B&T 9mm Magazine - 10 Round
B&T Brugger & Thomet
Now: $57.95Was: $65.00B&T 10 Round 9mm Magazine Compatible With: B&T MP9/TP9 B&T APC9 B&T SPC9 B&T GHM9 B&T KH9 ***NOT compatible with models equipped with Glock or Sig magazine compatible lowersHKP-21740Now: $57.95Was: $65.00 -
Out Of Stock
B&T Stock Conversion Kit - Stock or Brace Adapter - Telescopic
B&T Brugger & Thomet
$90.00B&T Stock Conversion Kit for Telescopic Brace/Stock Adapters This stock conversion kit will work on all models of telebraces with a tailhook adapter endplate. Perfect for converting you telescopic brace into a proper stock (NFA rules apply). The kit...HKP-21725$90.00 -
On Sale
HK MP5 Alpha Folding Stock With Direct Fit Adapter - .22 LR
MI Midwest Industries
$335.95 - $356.95MI/HKP HK MP5 .22 LR Alpha Folding Brace/Stock Adapter The Midwest Industries alpha folding stock paired with the HK Parts picatinny rail adapter offers unparalleled versatility. Adjust your length of pull, cheek riser, and butt pad to your exact style...HKP-21515-M$335.95 - $356.95 -
Out Of Stock
HK MP5K Folding Stock - MBT
B&T Brugger & Thomet
$569.95B&T HK MP5K - MBT Stock B&T MBT folding stock for HK MP5K. Polymer stock and adapter. Features: 8 position length adjustment Telescoping cheek riser w/ 3 position height adjustment Folds to the right canted downward 3.5 degrees Locks...HKP-21421$569.95 -
On Sale
HK VP9, P30 +15 Magazine Extension Kit - Black
HKP HK Parts
Now: $59.95Was: $74.95Magazine Extension Kit +15 – Black - HK VP9, HK P30 HK Parts magazine extension +15 kit adds 15 additional rounds to the HK VP9/P30 magazine with the simple swap of the floor plate & high-reliability mag spring. HKP highly recommends...HKP-21340Now: $59.95Was: $74.95 -
On Sale
HK UMP Bolt Carrier - Semi-Auto - Complete - .45 S&W
OMEGA
Now: $224.95Was: $359.95Omega HK UMP .45 Bolt Carrier Complete - Semi Auto Replacement part for USC to UMP conversions. Marked .45 semi auto just like the OEM carrier. Compatible With: HK UMP .45 Includes: Extractor Firing Pin Firing Pin Spring Firing Pin Retaining Pin The...HKP-21316Now: $224.95Was: $359.95 -
On Sale
HK MP5 Barrel - 10mm - Threaded 14x.75 with 3 Lug
RCM
Now: $223.95Was: $279.95RCM HK MP5 10mm Barrel - Threaded 14x.75 Enhance your MP5 with the RCM HK MP5 10mm Barrel, featuring precise 14x.75 threading. Expertly crafted for German MP5 models, this barrel ensures superior durability and performance. Ideal for both custom builds...HKP-21156Now: $223.95Was: $279.95 -
HK MP5KSD Barrel Shroud and Handguard Combo
HKP HK Parts
$289.95HK Parts HK MP5KSD Shroud and Handguard Combo The perfect items for those that are looking into doing a custom MP5K SD build. The finest MP5K SD shroud ever made or available. This will be the best combo set for a top notch fit and conversion finish...HKP-20950$289.95 -
HK VP9, P30, HK45 Night Sight - R4E - Suppressor Height
Meprolight
$194.95Meprolight R4E Self Illuminated Night Sight for HK VP9 - Suppressor Height Rapid target acquisition is a critical component of defensive shooting. Designed by two highly experienced U.S. Special Forces veterans, the R4E Optimized Duty Sights have FIVE...HKP-19521$194.95 -
On Sale
HK G36C Handguard
GSG9
Now: $100.95Was: $126.95GSG9 Handguard with Heat Shield and Hand Stop for HK G36C New GSG9 manufactured forearm with heat shield and hand stop fits all HK G36C's or SL8, G36 conversions sized for the G36C barrel. Each unit also features the hand stop with sling attachment...HKP-18216Now: $100.95Was: $126.95 -
On Sale
HK VP9, VP40 Compensator with Rail Adapter
HKP HK Parts
Now: $96.95Was: $184.95HK VP9 & VP40 - Comp Weight™ With Rail Adapter HK Parts VP9, VP40 Comp Weight™/compensator with Rail Adapter Installed is the perfect addition to your HK VP9/VP40 firearm with our low profile, aggressive Comp Weight™ that flows with...HKP-18755Now: $96.95Was: $184.95