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
HK VP9 Railok™ Threaded Barrel Compensator - BLEMISHED
HKP HK Parts
Now: $91.95Was: $189.95HK VP9 Railok™ Threaded Barrel Compensator - 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 HK Parts Railok™...HKP-21163-BL-BNow: $91.95Was: $189.95 -
HK MP5Z German Police Trigger Group With Full Auto Lock Out Lever System - Rare
H&K Heckler & Koch
$879.95Heckler and Koch MP5Z German Police Trigger Group With Full Auto Lock Out Lever System - Rare The MP5Z was a special German police and commercial variant of the Heckler & Koch MP5, designed to adhere to strict German firearms laws that restrict...HKP-99792$879.95 -
HK MP5, SP5, MP5K, SP5K Flash Hider - 3-Lug - 9mm
HKP HK Parts
$99.95Heckler and Koch MP5 SP5 MP5K SP5K Flash Hider 3-Lug 9mm Flash hider designed for Heckler and Koch MP5, SP5, MP5K, and SP5K platforms in 9mm caliber. Used to reduce muzzle flash signature during firing. Compatible With: - MP5, SP5 - MP5K, SP5K - In-spec...HKP-22788$99.95 -
HK German Sling - 3 Point - Like New
H&K Heckler & Koch
$73.95Heckler and Koch HK Platform German Sling 3 Point Three-point sling designed for HK rifles and carbines. Provides secure weapon retention and hands-free carrying. Compatible With: - HK G3, HK91, HK93 - HK33, HK33KA, HK53 - In-spec clones and custom...HKP-22787$73.95 -
HK 91, G3 Barrel - FMP - 17.7" - Threaded - 15x1
FMP HK CONTRACT
$574.95Heckler and Koch HK 91, G3 Barrel FMP 17.7 Inch Threaded 15x1 Barrel for Heckler and Koch HK 91 and G3 platforms manufactured under the FMP HK contract. Designed for assembly and replacement with a 17.7-inch length and 15x1 thread pitch for muzzle...HKP-22786$574.95 -
HK21 Bolt Head - FMP - NOS
FMP HK CONTRACT
$784.95HK21 NOS Bolt Head - FMP Genuine new old stock FMP contract date-coded bolt head for the HK21 platform. Perfect for a replacement or spare as these bolt heads are no longer in production. Compatible with: HK21 (Early and FMP, NOT compatible with...HKP-22711$784.95 -
QD Offset Adapter 4mm Compatible with Surefire G2
B&T Brugger & Thomet
$28.95B&T QD Offset Adapter 4mm compatible with Surefire G2Secure your Surefire G2 weapon light to any Picatinny rail section on your firearm with this quick detach, light-weight mount from B&T. Compatible with: All firearms equipped with a Picatinny...HKP-99445$28.95 -
On Sale
UZI Lower Grip, Incomplete - A.R.S - USED
IMI
Now: $97.95Was: $189.95IMI UZI Complete A.R.S Lower Grip - Incomplete - USED VARYING CONDITION SHOWN - SOLD INDIVIDUALLY INCOMPLETE - MISSING SELECTOR LEVER AND BROKEN GRIP Israel manufactured complete lower grip. Each grip in is good condition and show signs of wear. Please...HKP-99193-USEDNow: $97.95Was: $189.95 -
On Sale
HK USPC Magazine Housing - 9mm - 10 Round - BLEMISHED
H&K Heckler & Koch
Now: $12.95Was: $19.95HK USPC Magazine Housing - 9mm - 10 Round - BLEMISHED ONLY 2 UNITS AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This is an...HKP-02500-BNow: $12.95Was: $19.95 -
On Sale
FMK-3 Handguard Grip Set - USED
Other
Now: $18.95Was: $26.95FMK-3 Handguard Grip Set - Used USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Comes with everything pictured. Used, fair/good condition. No hardware included.HKP-99441Now: $18.95Was: $26.95 -
On Sale
Radar 1957 USW-P320 Full Size Holster – Polymer – Fits APL
Other
Now: $129.95Was: $179.95Radar 1957 USW-P320 Full Size Holster – Polymer – Fits APL – Dual 60mm Removable Loops DAMAGED AND OPEN PACKAGING COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART...HKP-99434Now: $129.95Was: $179.95 -
On Sale
HK94 Barrel - Incomplete - USED
H&K Heckler & Koch
Now: $374.95Was: $549.95Heckler and Koch HK94 Barrel - Incomplete - USED ONLY 2 UNITS AVAILABLE - VARYING CONDITION SHOWN - SOLD INDIVIDUALY USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Genuine HK Incomplete used barrel for the...HKP-99433Now: $374.95Was: $549.95