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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HK MP5, SP5, HK94 A3 F Retractable Buttstock - 4 Position
H&K Heckler & Koch
$698.95H&K Heckler & Koch's A3 F 4-Position Retractable Stock designed for HK MP5, HK SP5, and the HK94 9mm submachine gun. This German HK A3 F retractable buttstock is the latest and the greatest! The...HKP-17614$698.95 -
HK CC9 Magazine - 9mm - 12 Round - Extended Floorplate - Red Follower
H&K Heckler & Koch
$49.95H&K HK CC9 12 Round Magazine - Extended Floor PlateHKP-21572$49.95 -
HK MP5, HK94 Case Deflector Rivet - US
HKP HK Parts
$1.95HKP MP5, HK94 Case Deflector Rivet Each case deflector will require 2 rivets to attach the case deflector to the receiver or flat. If you want the factory look and feel of doing it right these...HKP-18008$1.95 -
On Sale
HK G3 Parts Kit - FMP
FMP HK CONTRACT
Now: $127.96Was: $159.95FMP - G3 Parts Kit - With Alloy Mag The G3 has been an iconic battle rifle utilized all over the world and revered as one of the best that H&K has offered. These kits are de-milled G3's that were...HKP-22531Now: $127.96Was: $159.95 -
Out Of StockOn Sale
IMI 32 Round Uzi 9mm Magazine - German Military
IMI
Now: $29.46Was: $39.95IMI 32 Round Uzi 9mm Magazine - German Military These magazines were military only, not commercial, which makes them desirable magazines. Conditions vary from excellent to like new shape. Any...HKP-14472Now: $29.46Was: $39.95 -
HK MP5 Handguard - .22LR - M-LOK
HKP HK Parts
$99.95HKP HK MP5 .22LR M-LOK Handguard The M-LOK tactical hand guard easily installs on your firearm with minimal effort and locks up solid. No fitting required, a true drop in option. Features:HKP-20305-M$99.95 -
Out Of Stock
HK USP, HK45 Short Reset System
Grayguns
$90.00Grayguns HK USP, HK45 Short Reset System This Short Reset System for the HK USP and HK45 replicates the short reset conversion available at Grayguns. Cut from bar stock steel, these kits provide an...HKP-19753$90.00 -
HK MP5 Trigger Pack - Full Auto - Complete - 9mm
H&K Heckler & Koch
$349.95H&K Heckler & Koch - HK MP5 Trigger Pack - Full Auto - Complete - 9mm German Each factory full autoHKP-00981$349.95 -
Out Of Stock
HK USPC, P2000 Magazine - 9mm - 13 Round
H&K Heckler & Koch
$49.00H&K HK 13 Round USPC/P2000 9mm Magazine Each magazine is a current HK German manufacturer. Brand new and factory fresh. Compatible With:HKP-00312-M$49.00 -
On Sale
Glock 17 - Magazine Extension Kit - 9mm - +6 Round
HKP HK Parts
Now: $12.91Was: $34.95HKP Glock 17 - +6 Round 9mm Magazine Extension Kit Designed to fit all of the Glock 17 models from Gen 1 through and up to the current Gen 5 models. Each unit is fully machined from a solid billet of...HKP-18348-MNow: $12.91Was: $34.95 -
Out Of Stock
HK MP5K Vertical Foregrip - 3 Slot Rail Section
HKP HK Parts / Magpul
$69.95HKP, Magpul MP5K VFG w/Rail Section - 3 Slots New VFG for the MP5K platform is now M-LOK compatible and comes with a Magpul Aluminum 3 slot rail. The perfect combination to install lights or lasers...HKP-20726$69.95 -
On Sale
HK, Walther, Colt, .22LR O-Ring- Barrel Adapter
USA
Now: $2.37Was: $2.95Heckler and Koch, Walther, Colt, .22LR Barrel Adapter O-Ring Made from the highest quality and very durable Viton material. The O-ring on the adapter tear with use or become brittle over time. Be...HKP-17379Now: $2.37Was: $2.95