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 Stock
HK Locking Roller -4 , 7.96mm
HKP HK Parts
$8.957.96mm - Undersized -4 Roller For HK Roller Lock Bolt HeadHK spec under-sized roller that will fit all HK bolt heads including HK91/G3, HK93/33/53, HK94, MP5, SP89 all clones and the Cetme & Cetme clones. An easy way to remember the size you need to...HKP-17558$8.95 -
Out Of Stock
HK MP5 Bolt Carrier Group - Full Auto - Complete - IB DATE CODE
H&K Heckler & Koch
$0.00MP5 Full Auto Bolt Group Complete - IB DATE CODE-NEW OLD STOCK HK German 9mm MP5 full auto bolt carrier IB dated new old stock in 100% working order. These bolt groups are HK German MP5 Limited quantity available. Heckler & Koch bolt...HKP-00662$0.00 -
Out Of Stock
HK33, 93 Cocking Tube with Hanger - USED
H&K Heckler & Koch
$88.95HK33/93 Cocking Tube With Hanger - UsedHKP-00710$88.95 -
Out Of Stock
HK33, HK53 Trigger Group - 0-1-25 SEF - Used
H&K Heckler & Koch
$999.95H&K 53/33 0-1-25 SEF Trigger Group-Used HK German 0-1-25 SEF trigger groups for 53/33 in used in good condition. These trigger groups are the ultimate choice to complete the factory correct look for a HK53. Given that the 0,1,25 trigger groups are no...HKP-00705$999.95 -
On Sale
HK G36C Stock - Cheek Rest - BLEMISHED
H&K Heckler & Koch
Now: $142.95Was: $209.95HK G36C Stock - Cheek Rest - BLEMISHED CRACKED ON THE CHEEK REST COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Genuine German Heckler & Koch G36 stock. The...HKP-00278-BNow: $142.95Was: $209.95 -
On Sale
HK USPC Night Sights - Tru-Dot - Yellow, Green - BLEMISHED
Meprolight
Now: $68.95Was: $97.95Meprolight HK USPC Tru-Dot Night Sights - Yellow/Green - BLEMISHED INSTALLATION MARKINGS - DAMAGED PACKAGING COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL...HKP-01910-BNow: $68.95Was: $97.95 -
On Sale
HK USP Magazine Extension - 9mm - +7 Round - Red - BLEMISHED
HKP HK Parts
Now: $47.95Was: $69.95HK USP Magazine Extension - 9mm - +7 Round - Red - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Easy to install. Simply add the mag extension to your...HKP-21841-RE-BNow: $47.95Was: $69.95 -
On Sale
HK USP .40 S&W +5 Magazine Extension - Red - BLEMISHED
HKP HK Parts
Now: $31.95Was: $49.95HK USP .40 S&W +5 Magazine Extension - Red - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK Parts magazine extension +5 adds 5 additional rounds...HKP-18645-RE-BNow: $31.95Was: $49.95 -
On Sale
HK MP5, MP5K Folding Stock or Brace - HDA3 - FDE - BLEMISHED
Haga Defense
Now: $260.95Was: $349.95HK MP5, MP5K Folding Stock or Brace - HDA3 - FDE - BLEMISHED INSTALLATION MARKINGS COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The HDA3 is a modular, USA-made...HKP-22355-FDE-BNow: $260.95Was: $349.95 -
HK MP5, AP5 Magazine Catch Push Button
MKE
$6.95HK MP5, AP5 Magazine Catch Button Push button for magazine catchCompatible with: HK MP5, SP5 HK MP5K, SP5K HK SP89 HK94 HK33, HK53, HK93 HK91, G3 In-spec. clones and custom buildsHKP-22548$6.95 -
HK MP5 A3 Retractable Buttstock Lever Rebuild Kit
H&K Heckler & Koch
$49.95Heckler and Koch Lever Rebuild Kit for A3 Retractable Buttstocks Rebuild kit for worn out or to complete A3 retractable stocks with metal back plate Compatible with: MP5 HK33 HK91, G3HKP-22547$49.95 -
On Sale
IMI UZI Complete A.R.S Lower Grip - Incomplete - USED
IMI
Now: $97.95Was: $189.95IMI UZI Complete A.R.S Lower Grip - Incomplete - USED VARYING CONDITION SHOWN - SOLD INDIVIDUALLY INCOMPLETE - MISSING SELECTOR LEVER AND BROKEN GRIP Israel manufactured complete lower grip. Each grip in is good condition and show signs of wear. Please...HKP-99193-USEDNow: $97.95Was: $189.95