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
HK91, G3 Telescopic Stock
MKE
Now: $314.96Was: $349.95MKE Telescopic Stock for HK G3 and HK91 The MKE telescopic G3 stock is an easy-to-install replacement stock system for HK G3-style firearms. The simple lock/release system is easy to operate,...HKP-21182Now: $314.96Was: $349.95 -
HK VP9, USPC, P Series Magazine Housing - 15 Round
H&K Heckler & Koch
$47.95H&K 15 Round HK VP9/USPC/P Series Magazine Housing Brand new HK German factory magazine body for the 15 round 9mm magazine. Will also work with the 17 round and 20 round magazine components. This mag...HKP-16655$47.95 -
On Sale
HK MP5K, SP5K Spare Buffer for Folding Stocks and End Caps
HKP HK Parts
Now: $7.96Was: $9.95HKP Spare Buffer For Folding Stocks & End Caps New US manufactured flat style "H"buffer to replace the factory HK buffer on MP5K folding stocks and end caps. As well as a spare or replacement buffer...HKP-17886Now: $7.96Was: $9.95 -
HK Mark 23 Picatinny Rail Adapter - Gen 2
HKP HK Parts
$99.95HK Mark 23 Picatinny Rail Adapter (SOCOM) - Gen 2 The original Mark 23 rail adapter mount provides for a seamless attachment point of any tactical light, laser setup that attaches by way of a...HKP-01470$99.95 -
On Sale
Pack of 10 Polish Signal Flares - 26.5MM
Other
Now: $44.96Was: $74.95Pack of 10 Polish Signal Flares - 26.5MM Includes an original, sealed pack of 10 Polish signal flares. The pack of 10 Polish military surplus flares include 2 of each of the following: White...HKP-20793Now: $44.96Was: $74.95 -
HK MP5K, SP5K, SP89 Stock or Brace Adapter with Picatinny Rail
JMAC Customs
$94.95JMAC Customs MP5K, SP5K, SP89 9mm Brace/Stock Adapter with Picatinny Rail This stock adapter allows you to attach any 1913 style stock, brace to your MP5K. The 1913 style stocks & braces lock in...HKP-18990$94.95 -
HK VP9 Tactical Barrel - 9mm - 4.7" - Threaded 13.5x1 LH
H&K Heckler & Koch
$274.95H&K VP9 9mm Tactical Barrel - Threaded 13.5x1 LHHKP-17995$274.95 -
HK MP5, MP5K Magazine Follower - 9mm - RED
HKP HK Parts
$8.95HKP MP5 & MP5K 9MM Magazine Follower - RED Teflon infused glass filled polymer red colored follower that will work with all HK MP5, MP5K 9mm curved magazines. A drop in item that allows you to swap...HKP-18302$8.95 -
On Sale
HK P30, P2000 Short Reset System Thumb Safety
Grayguns
Now: $81.00Was: $90.00Grayguns Short Reset System Thumb Safety for HK P30 and HK P2000 Replicate Grayguns custom in-house short reset conversion with a drop-in kit for your HK P30 with thumb safety. Cut from bar stock...HKP-19756Now: $81.00Was: $90.00 -
On Sale
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Molykote®
Other
Now: $33.26Was: $36.95Molykote® Anti-Friction Coated Turkish Contract 30 Round MP5 9mm Magazine Molykote is a specialty coating formulated to reduce friction and wear between mating surfaces. It not only works well, but...HKP-22479Now: $33.26Was: $36.95 -
HK MP5 .22LR Handguard - M-LOK
HKP HK Parts
$169.95HKP HK Parts and Heckler and Koch M-LOK Forearm for HK MP5 .22LR HK Parts brings you a long overdue option for all the MP5 .22LR owners. Our new forearm takes the classic MHKP-21260-M$169.95 -
HK Screw Set for HKP Rail Mount Compensator
HKP HK Parts
$4.95Replacement Screws for Rail Mount Compensator Replacement screw set for the HK Parts Rail Mount Compensators. This includes (2) screws. Compatible With: All HK Parts Rail Mount CompensatorsHKP-19674$4.95