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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HK416, Colt M4 Magazine - .22LR - 20 Round
Walther / Umarex
$39.95HK, Umarex, Walther, HK416 .22LR Magazine - 20 Round Magazine Each magazine is the factory OEM magazine for all of the models above. Brand new factory fresh. This magazine is the perfect balance of...HKP-01748$39.95 -
HK UMP Magazine Spring - .45 ACP - 25 Round
H&K Heckler & Koch
$9.95H&K UMP (.45 ACP) 25-Round Magazine Spring Perfect for spares and to have on hand as these are a consumable item that needs to be replaced from time to time. A must-have item if you own a USC/UMP...HKP-01548$9.95 -
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 MP5, HK90 Series Ejector Lever Axle
MKE
Now: $10.10Was: $17.95MKE Trigger Pack Ejector Lever Axle Fits all SEF & Ambidextrous style HK trigger packs regardless of caliber. MKE product made on HK tooling. Fits all of the following 90 series trigger packs:HKP-22241Now: $10.10Was: $17.95 -
HK91, G3 Barrel - FMP - 17.7" - Threaded 15x1
FMP HK CONTRACT
$89.95HK G3, 91 Barrel - 7.62/.308 - 17.7" - Threaded 15x1 Original 17.7" FMP G3 barrel threaded 15x1 RH. Portuguese manufactured to HK's military specifications. These surplus barrels are perfect for...HKP-22532$89.95 -
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 -
HK MP5K, SP5K Spare Buffer for Folding Stocks and End Caps
HKP HK Parts
$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-17886$9.95 -
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 -
Out Of Stock
HK VP9 Micro Comp - Vented - Threaded 13.5x1 - Left Hand
HKP HK Parts
$29.95HKP 9mm Vented Micro Comp - Threaded 13.5x1 LH The HK Parts Micro Comp & Thread Protector is designed to be lightweight and functional both as a compensator and thread protector. This light weight...HKP-19720$29.95 -
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 -
Out Of Stock
HK MP5, SP5K, HK94, SP89 Magazine Catch - 9mm - Latest Style
H&K Heckler & Koch
$64.95Heckler and Kock Magazine Catch Latest Style Genuine HK mag release for factory and clone firearms. This component often resolves issues with mags not locking into position on HK clones and builds...HKP-00911$64.95 -
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Molykote®
Other
$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-22479$36.95