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 USP Compact Recoil Spring with Captive Spring - 9mm
H&K Heckler & Koch
$113.95HK USP Compact 9mm Recoil Spring With Buffer Assembly Complete Great spare or replacement item to have as a spare. This is the new factory part for all HK USP9C Pistols.HKP-01158$113.95 -
On Sale
ETS Glock 43 12-Round 9mm Magazine - Translucent
Elite Tactical Systems
Now: $9.95Was: $21.95ETS Glock 43 Extended Mag - 12 Round Capacity Features: Extreme Impact Resistance Very resistant to harsh chemicals Superior heat, cold and UV resistance Translucent body Creep resistant: the feed lips and body won't spread when being stored long term...HKP-18770Now: $9.95Was: $21.95 -
HK UMP/G36 Buttstock Locking Piece Button
H&K Heckler & Koch
$14.95HK G36 & UMP Buttstock Push Button This is a factory HK German replacement button for the HK G36 and HK UMP stock.HKP-02468$14.95 -
HK91, G3 Rear Sight Drum - Used
H&K Heckler & Koch
$4.95HK German Rear Sight Drum For .308/7.62 - Used Used surplus genuine Heckler & Koch German manufactured product. Rare and hard to find. Most come in good shape but could use a good refinish. Used and range from good - exc shape. Compatible With: HK...HKP-18093$4.95 -
On Sale
HK91, G3 Tactical Rail - 3 Inch
HKP HK Parts
Now: $9.95Was: $14.95HKP Tactical Rail - 3 Inch The six mounting screws are also included with each rail. This rail will fit on either the left or right side or the bottom of the PTR and HK91/93 tactical handguards. Up to three rails can be used on each forearm. Compatible...HKP-00894Now: $9.95Was: $14.95 -
B&T 9mm Gov't Contract 30 Round Complete Magazine
B&T Brugger & Thomet
$50.00B&T 9mm Gov't Contract 30 Round Complete Magazine This B&T 9mm magazine is designed for reliable performance in your MP9, TP9, APC9, GHM9, or SPC9. With a 30 round capacity, it meets the standards of government contracts, making it a dependable...HKP-21711$50.00 -
HK45, HK45C, USP, USPC Detent Plate - V1, V2
H&K Heckler & Koch
$18.95Detent Plate For V1 & V2 This will provide the safety and decocking functions for both the left and right side selector levers for the HK pistols below. Compatible With: USP Full Size, USPC Pistols in all Calibers 9mm, .357, .40 & .45 HK45...HKP-01171$18.95 -
HK Magazine Release - HK45 & P30, P30L, P30SK
H&K Heckler & Koch
$15.95H&K Magazine Release Compatible With: HK45 HK45 Tactical HK P30, P30S, P30L, P30SK Please Note: This part will not fit pistols other than the ones listed above.HKP-01809$15.95 -
Out Of Stock
HK45, HK45 Compact, USP, USP Compact Control Latch
H&K Heckler & Koch
$16.95Control Latch Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact 9mm HK USP Compact .40 S&W HK USP Compact .45 ACP HK45, HK45 Tactical HK45 Compact, HK45C Tactical HK Tactical, Elite & Expert ModelsHKP-01174$16.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Forward Assist Plunger Spring
H&K Heckler & Koch
$5.95Heckler and Koch's Forward Assist Plunger Spring for HK416, MR556, HK417, MR762 New HK German manufacture. Compatible With: HK416, MR556 HK417, MR762 HK G28 HK M27HKP-02537$5.95 -
HK Universal Harris Bipod Adapter
H&K Heckler & Koch
$209.95HK Factory Harris Bipod Adapter - Low Profile This adapter is to attach the Harris bipod to any Picatinny rail. It is compatible with all Picatinny railed forearms or applications. A new HK German manufactured part made for the HK 416, MR556, HK417...HKP-01852$209.95 -
HK91, G3 Stock - AR15 Style - Complete Assembly
PTR
$274.95PTR HK 91/G3 (7.62x51/.308) AR15 Style Magpul Stock - Complete Assembly AR15/M16 retractable stock combo set up for use on an HK91, G3 & PTR91 style of rifles. This is a perfect compliment for those that want to use The popular Magpul MIL-SPEC Moe...HKP-15614$274.95