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
Promag 12 Round HK USP .45 ACP Magazine - Black - USED
Promag
Now: $27.95Was: $36.95Promag 12 Round HK USP .45 ACP Magazine - Black - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Made in the US by Promag. Compatible With: USP .45 FS USP 45...HKP-02090-USEDNow: $27.95Was: $36.95 -
On Sale
HK91, G3, PTR Magazine - 5 Round - Black - USED
HKP HK Parts
Now: $38.95Was: $79.95HK91, G3, PTR Magazine - 5 Round - Black - USED ONLY 2 UNITS AVAILABLE - VARYING CONDITION SHOWN - SOLD INDIVIDUALLY PITTING USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. 5 Round German Steel 308 Magazine...HKP-16250-USEDNow: $38.95Was: $79.95 -
On Sale
HK MP5, HK94, HK 93, HK91, PTR SL Grip Module Semi Shelf - INCOMPLETE - BLEMISHED
Magpul
Now: $42.95Was: $59.95HK MP5, HK94, HK 93, HK91, PTR SL Grip Module Semi Shelf - INCOMPLETE - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED MISSING GRIP COVER COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED...HKP-19320-BNow: $42.95Was: $59.95 -
On Sale
M-LOK Rail Section - 3 Slots - BLEMISHED
Magpul
Now: $13.95Was: $18.95Magpul M-LOK 3 Slots Rail Section 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. Designed for use with all M-LOK compatible hand...HKP-20495-BNow: $13.95Was: $18.95 -
HK21E, HK11A1, HK11E Barrel With Grip - 17.7"
Michaels Machines
$1,478.95MM HK21E, HK11A1, HK11E Barrel - 17.7" Michael's Machines HK21E barrels are crafted in the US from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Barrels come complete, drop-in ready with a new factory flash hider and fully...HKP-22540$1,478.95 -
On Sale
HK MP5, HK94 Folding Stock - BLEMISHED
Choate
Now: $154.95Was: $219.95HK MP5, HK94 Stock - Folding" - BLEMISHED INSTALLATION MARKINGS - DINGS ON ADAPTER COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Each stock features the...HKP-00171-BNow: $154.95Was: $219.95 -
HK21, HK11 Barrel with Grip Handle and Flash Hider - 17.7" - MM
Michaels Machines
$1,478.95MM HK21 Barrel - 17.7" - CHF Michael's Machines HK21 barrels are crafted in the US from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Each barrel ships complete with a factory new flash hider and fully assembled handle comprised...HKP-22534$1,478.95 -
HK MP5, AP5 Trunnion - 9mm
MKE
$64.95HK MP5 Trunnion Made to exact factory HK specifications for the HK MP5K type builds. Machined to HK spec making the install painless and hassle free. Compatible With: MP5 SP5 In spec clonesHKP-22523$64.95 -
On Sale
HK MP5, 90 Series, AP5 Trigger - BLEMISHED
MKE
Now: $22.95Was: $34.95MKE AP5, HK MP5, 90 Series Trigger - BLEMISHED VARYING CONDITION SHOWN - SOLD INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Steel trigger...HKP-22519-BNow: $22.95Was: $34.95 -
On Sale
HK G3 Handguard - FMP - Surplus
FMP HK CONTRACT
Now: $39.95Was: $64.95HK Contract Portuguese FMP HK G3 Handguard - Surplus USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Original FMP Portuguese contract HK G3 handguard. Manufactured under HK license for military production...HKP-99438Now: $39.95Was: $64.95 -
On Sale
HK MP5 Wide Handguard - Pressure Pad - 16-Slot Rail - Rare - USED
Other
Now: $324.95Was: $449.95Rare Defiance HK MP5 Wide Handguard - Pressure Pad - USED VARYING CONDITION SHOWN - SOLD INDIVIDUALLY USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Swiss-made rare MP5 handguard with pressure pad and...HKP-99435Now: $324.95Was: $449.95 -
HK MP5K, SP5K Trigger Group - Single Stage - SSTG
Magpul
$669.95SSTG Magpul trigger group The Single Stage Trigger Group is a blend between the past and future. The trigger pack begins life as a factory German trigger pack before being professionally converted into a semi-auto trigger pack. After the conversion, each...HKP-22522-M$669.95