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 StockOn Sale
HK VP9SK Competition Magwell Black - BLEMISHED
HKP HK Parts
Now: $42.95Was: $59.95HK VP9SK Competition Magwell Black - BLEMISHED DENTS ON SIDE - 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. Lightweight VP9SK Magwell...HKP-22336-BL-BNow: $42.95Was: $59.95 -
Out Of StockOn Sale
HK MP5, MP5K Cocking Handle - Extended - Enhanced - BLEMISHED
HKP HK Parts
Now: $26.95Was: $39.95HK MP5, MP5K Cocking Handle - Extended - Enhanced - 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. Enhanced extended cocking...HKP-18267-BNow: $26.95Was: $39.95 -
On Sale
HK MP5 Optic Mount - Raised - Picatinny Black - BLEMISHED
HKP HK Parts
Now: $96.95Was: $134.95HK MP5 Optic Mount - Raised - Picatinny Black - 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 HKP raised Picatinny optic...HKP-21819-BL-BNow: $96.95Was: $134.95 -
HK MP5, HK94 A3 Retractable Buttstock - Factory - Used
H&K Heckler & Koch
$679.95Heckler and Koch MP5 HK94 A3 Retractable Buttstock Retractable buttstock designed for MP5 and HK94 models. Provides adjustable shoulder support and improved handling. - MP5 A3, MP5A3 - HK94 A3 - In-spec clones and custom buildsHKP-22785$679.95 -
HK G36 Mounting Rail Carry Handle - Portuguese Version
B&T Brugger & Thomet
$149.95HK G36 Mounting Rail Carry Handle, Portuguese Version Swiss-made B&T G36 mounting rail designed for the HKG36 carrying handle, based on the Portuguese military configuration. Manufactured by B&T Switzerland this rail delivers exceptional quality...HKP-99446$149.95 -
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 G36 Dual Optic With Carrying Handle - USED
H&K Heckler & Koch
Now: $1,499.95Was: $2,099.95HK G36 Dual Optic With Carrying Handle - USED ONLY 2 UNITS AVAILABLE - AS PICTURED DOTS OVER SCOPE - DAMAGED BUTTON USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Factory HK G36/SL8 dual optic in used...HKP-00744-USEDNow: $1,499.95Was: $2,099.95 -
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 -
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 -
HK21, HK11 Barrel with Grip Handle and Flash Hider - 17.7"
RCM
$1,089.95HK21, HK11 Barrel with Grip Handle and Flash Hider - 17.7" RCM HK21 barrels are crafted from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Each barrel ships complete with a new factory flash hider and fully assembled handle...HKP-22533$1,089.95 -
HK MP5K, AP5-P Trunnion - 9mm
MKE
$79.95HK MP5K 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: MP5K In spec clonesHKP-22522$79.95 -
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