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, UMP Pistol Grip Storage Insert
USA
Now: $12.95Was: $16.95HK UMP, G36 Pistol Grip Storage Insert G36 & UMP pistol grip insert for all G36 & UMP lower housings. This is the piece that locks into place and fits in the bottom of the handle itself. This is a perfect storage location for paperwork, spare...HKP-20176Now: $12.95Was: $16.95 -
On Sale
HK USC, UMP .45 Flash Hider - 3 Lug
B&T Brugger & Thomet
Now: $139.95Was: $165.00B&T HK USC/UMP .45 Flash Hider - 3-Lug B&T Switzerland has supplied these to law enforcement and military units around the world. Rock solid, mil-spec quality from an H&K OEM manufacturer. This flash hider slips over the end of the 3-lug...HKP-18346Now: $139.95Was: $165.00 -
HK416A5, MR556 Ambi Selector Lever Set Complete
H&K Heckler & Koch
$179.95H&K HK MR556/416 A5 Ambi Selector Lever Set Complete New HK German manufacture. Complete kit to upgrade the selector lever set on the MR556 to the newer HK 416A5 semi style of levers. A drop in upgrade for the MR556 & CR556. Includes: HK 416 A5...HKP-19375$179.95 -
HK417, MR762, G28 Adjustable Buttstock Set - RAL8000
H&K Heckler & Koch
$589.95H&K HK MR762, HK417, G28 Adjustable Buttstock Set - RAL 8000 HK G28 adjustable stock kit complete with the necessary parts convert a stock MR762 or HK417 to G28 spec. Includes: G28 fully adjustable stock G28 buffer tube/receiver extension G28...HKP-16760$589.95 -
HK USPC Night Sights - Tru-Dot - Green
Meprolight
$118.95Meprolight HK USP Compact - Tru-DotNight Sights - Green HK Factory OEM part: 701973 HK uses these as their OEM night sight. Features: Green Front & Green Rear Tritium Unequaled Light Performance Brightest Night Sights Available Today Used by...HKP-01908$118.95 -
HK UMP Magazine Locking Plate - .45 ACP
H&K Heckler & Koch
$9.95H&K UMP (.45 ACP) Magazine Locking PlateHKP-16338$9.95 -
On Sale
HK91, G3 Folding Stock
Choate
Now: $124.95Was: $147.95HK91, G3, & PTR - Folding Stock The HK Choate side folding stock is complete with a sling swivel and a new German HK backplate, ready to drop on your favorite HK rifle. No gunsmith is needed as this is an easy-to-do drop in stock. Pull the two stock...HKP-01950Now: $124.95Was: $147.95 -
HK91, G3, HK93, HK417 Flash Hider - Birdcage - Threaded 15x1 RH
H&K Heckler & Koch
$34.95HK Heckler and Koch's Birdcage Flash Hider Threads onto 15x1 RH twist barrels. This factory German flash hider attaches to any factory HK barrel. No tools required for installation. Specifications: Made In Germany Threaded 15x1...HKP-00359$34.95 -
On Sale
HK MP5, MP5K, HK93, HK91 Handguard Retainer Screw - Tactical, Keymod, and M-LOK
PTR
Now: $3.95Was: $4.95PTR Tactical, Keymod & M-LOK, Retainer Handguard Screw This is the screw that is used on all the Tactical, Keymod, and M-LOK forearms (MP5K, MP5, HK93, HK91). A great spare to have in case the original screw gets lost.HKP-16743Now: $3.95Was: $4.95 -
Out Of Stock
HK416, MR556 Magazine - 30 Round - Maritime- TiN
H&K Heckler & Koch
$149.95HK 416 & MR556 30 Round Maritime Magazine - TiN Coated Get your hands on some TiN coated factory Heckler & Koch magazines. Each magazine starts out as a fresh 30 round mag before being professionally dsiassembled, TiN coated, and...HKP-21468$149.95 -
On Sale
HK UMP Birdcage Flash Hider - .40 S&W, .45 ACP
B&T Brugger & Thomet
Now: $89.95Was: $99.95B&T Brugger and Thomet Birdcage Flash Hider in .40 S&W and .45 ACP for HK UMP B&T muzzle brake and flash hider birdcage style with quick detach lever for HK UMP .40 S&W & .45 ACP. Swiss made B&T quick detach flash hider for...HKP-16890Now: $89.95Was: $99.95 -
HK G36 Backplate
H&K Heckler & Koch
$94.99HK G36 Backplate With Recoil Buffer This is a great spare or replacement to have on hand. These are also required for those that are doing the SL8-G36 conversions provided by Tommy Bostic & Chopstix Kid.HKP-01058$94.99