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 G36, SL8 Handguard Rail - Bottom - 6"
HKP HK Parts
Now: $21.95Was: $27.95G36 & HK SL8 6" Bottom Rail Fits the SL8 and G36 full-size forearms. This item is just over 6" in overall length and is made from aircraft-grade aluminum. Comes with the screws needed for installation. From the center of the screw holes, there are...HKP-00285Now: $21.95Was: $27.95 -
Out Of Stock
HK UMP Parts Kit - .45 ACP
HKP HK Parts
$1,299.95H&K UMP Parts Kit - .45 ACP The HK Parts UMP parts kit includes everything needed to build out an iconic HK UMP from a stripped receiver. Guaranteed to be the most cost-effective way to get your hands on a complete UMP when paired up with the...HKP-21433$1,299.95 -
HK45, HK45C, USPC Magazine Floorplate - .45 ACP - 10 Round
H&K Heckler & Koch
$14.95H&K 10 Round HK USPC/45C 45 Magazine Floorplate Each floor plate is the new style rubberized floorplate for enhanced life. A great spare part to have on hand for repair and replacement of parts. This floorplate is commonly called the "elephant foot"...HKP-02210$14.95 -
On Sale
HK33, HK93, HK91, G3 Grips for Metal Frames - Plastic
EBO
Now: $20.95Was: $24.95Black Plastic Grips For Metal Grip Frames New Factory HK Contract metal grip. It is no longer in production and hard to find. Compatible With: HKG3 HK91 HK93 HK33HKP-00526Now: $20.95Was: $24.95 -
On Sale
HK90 Series Stock Locking Pin - Large
MKE
Now: $5.95Was: $6.95MKE Large Push Pin for your HK90 Series Stock Each large stock push pin is used to retain the stock to the receiver on the 90-series firearms. These are great replacement or spare part to keep on hand as they fit all of the 90-series firearms below. The...HKP-21593Now: $5.95Was: $6.95 -
On Sale
HK G36C, G36K Tri-Rail Set - Complete
UTG
Now: $57.95Was: $64.95UTG 1 Long and 2 Short Rail Rail Set for HK G36C, G36K, G36 .22LR Three-piece Picatinny rail set for G36-pattern handguards or forearms with built-in rail mounting points. Includes bottom, left, and right aluminum rails, along with mounting screws and...HKP-00272Now: $57.95Was: $64.95 -
On Sale
HK Locking Washer - Rear Sights
HKP HK Parts
Now: $1.95Was: $2.95HKP Rear Sights Locking Washer HK German rear sights toothed locking washer used in perfect working order.HKP-00869Now: $1.95Was: $2.95 -
HK USP, USP Tactical, USP Expert Complete Recoil Assembly
H&K Heckler & Koch
$94.95H&K HK USP/ Tactical/ Expert Complete Recoil Assembly Brand new factory German manufacture. Compatible With: HK USP 45 Tactical HK USP 45 Expert HK USP 45 Elite Tech Note: The USP Tactical recoil assembly can be used in a standard USP 45 without...HKP-01160$94.95 -
HK MP5, G3, HK93 Magazine Catch Push Button
H&K Heckler & Koch
$8.95Push Button For Magazine Catch Compatible With: G3 91 MP5 MP5K SP5K-PDW (For SP5K's not equipped with the paddle release, purchase this kit) 94 93 33 PTR, Clones, ETC.HKP-01833$8.95 -
HK MP5 Recoil Guide Rod Rivet - Used
H&K Heckler & Koch
$0.48H&K German Recoil Guide Rod Rivet-Used This rivet holds the stop pin and recoil spring captive and in place to the recoil rod itself. Compatible With: G3, 91, 33, 93, 53 MP5, 94 MP5K SP89 HK21 variantsHKP-16985$0.48 -
On Sale
HKP Leather Key Chain - MP5 - Black and Silver
HKP HK Parts
Now: $6.95Was: $9.00HKP Leather MP5 Key Chain - Black/Silver Leather MP5 keychain with HK sling style clip.HKP-21452Now: $6.95Was: $9.00 -
On Sale
HK91, G3 Stock Set - O.D. Green - Surplus
HKP HK Parts
Now: $19.95Was: $24.95Original German Army Used Surplus G3, 91, PTR OD Green Stock Set Factory HK German production. Each stock set is used but in perfect working order. Each set is in overall good condition. Most will clean up nicely with a little TLC. A great stock...HKP-16332Now: $19.95Was: $24.95