HK Rifle / SMG Parts
Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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On Sale
Scorpion Stock or Brace Adapter - Tailhook - Mod 1
Gear Head Works
Now: $9.95Was: $19.95GHW Scorpion Tailhook Mod 1 Brace/Stock Adapter This adapter allows the user to mount the Patented Tailhook Mod 1 brace to the factory CZ folding cheek rest. It is injection molded reinforced polymer and can be installed to your choice of 3 positions...HKP-19137Now: $9.95Was: $19.95 -
HK UMP Flash Hider - 5 Prong - .40 S&W, .45 ACP
B&T Brugger & Thomet
$129.95B&T Brugger and Thomet 5 Prong Flash Hider .40 S&W and .45 ACP for HK UMP Each flash hider includes the proper quick detach system to take the flash hider on and off. Each flash hider features a 5 prong design. Specifications: Diameter Max 31...HKP-16891$129.95 -
HK MP5K Slimline Handguard - OD Green
H&K Heckler & Koch
$49.95H&K HK MP5K Slimline Forearm - OD Green Used German military surplus O.D green slimline forearm with heat shield cut down to fit the MP5k. These are rare items only offered here at HK Parts. Each item is in good to excellent shape and will clean up...HKP-20199$49.95 -
HK G3 Early Style Backplate with Recoil Rod - Used
H&K Heckler & Koch
$24.95G3 - Early Production CETME, G3 HK91 Backplate - UsedHKP-19556$24.95 -
Out Of Stock
HK SP5 Trigger Group - SEF Match - Contoured Style
H&K Heckler & Koch
$799.95HK Heckler and Koch Contoured Style, SEF, Clipped and Pinned Trigger Group for HK SP5 Ready to drop on your Sp5 receiver. Great replacement trigger group. Each SP5 trigger group includes the following: Properly clipped and pinned housing for SP5 spec...HKP-19422$799.95 -
HK417, HK MR762 Threaded Pin for Buttstock Insert
H&K Heckler & Koch
$4.95H&K HK MR762/417 Threaded Pin For Buttstock Insert HK MR762, HK 417 threaded pin for the buttstock release lever insert. Compatible With: HK MR762 HK 417HKP-16609$4.95 -
Out Of Stock
HK417, MR762 Bolt Carrier
H&K Heckler & Koch
$519.95H&K HK MR762 Bolt Carrier New HK German production. Compatible With: HK MR762A1, A4 HK 417HKP-16626$519.95 -
HK416, MR556 Front Sight Roll Pin
H&K Heckler & Koch
$4.95Heckler and Koch Front Sight Roll Pin for HK416 and HK MR556HKP-02659$4.95 -
HK USC to UMP Conversion ACR Stock Block
$139.95HK USC To ACR Stock Adapter A new product that allows you to add the widely popular Remington ACR folding, adjustable stock to your USC-UMP conversion. This offering is for the stock block and hardware to attach your ACR stock for your HK USC when doing...HKP-17357$139.95 -
HK USC, SL8 Hammer
H&K Heckler & Koch
$98.95H&K USC/SL8 (.45 ACP/5.56/.223) Hammer Compatible With: HK USC .45 ACP HK SL8 .223/5.56HKP-16352$98.95 -
HK UMP Parts Kit - .45 ACP - De-Milled - Used
H&K Heckler & Koch
$3,429.95HK German UMP .45 Parts Kit- Used PD Trade-In UMP .45 German parts kit complete with all the factory HK parts minus the receiver. PD trade-ins are in good shape. Click this link to complete your build with an S5 Tactical receiver. Black Ops Defense...HKP-00589$3,429.95 -
HK UMP, USC Hammer Spring - Left
H&K Heckler & Koch
$13.95HK UMP & USC - Left Side Hammer Spring For All Lowers A high-wear item that needs to be changed when light firing pin strikes develop on your USC or UMP firearm. Compatible With: HK UMP models 45, .40, & 9mm. USC .45 and other conversion...HKP-01898$13.95