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, Mark 23 Recoil Assemblies Snap Ring
H&K Heckler & Koch
$5.95H&K HK USP/Mark 23 Recoil Assemblies Snap Ring The snap ring secures the spring onto the recoil buffer spring assembly. This part can come loose and become lost or easily worn. Once you remove them,...HKP-01258$5.95 -
On Sale
HK MP5, GSG-5, GSG-522, GSG-5PK Optic Mount
MFI
Now: $98.96Was: $109.95MFI HK Low Profile Scope Mount The MFI low profile scope mount was designed exclusively for the GSG-5, Umarex, and HK MP5 .22 models. The MFI mount takes less than 3 minutes to mount on your rifles...HKP-01545Now: $98.96Was: $109.95 -
HK MP5, MP5K Magazine - 30-Round - LEO Marked - 9mm
KCI
$52.95KCI 30 Round HK MP5, MP5K Magazine - LEO Marked KCI MP5 LEO marked magazines. Great for collectors and shooters who want the classic LEO aesthetic without paying factory-mag prices. We offer this...HKP-21611-M$52.95 -
On Sale
HK MP5, SP5 Telescopic Stock - B&T
B&T Brugger & Thomet
Now: $552.46Was: $649.95B&T's Brugger and Thomet Telescopic Stock for HK MP5 B&T offers a selection of shoulder stocks for the HK MP5, SP5, MP5SD, MKE AP5, ZF-5 in order to adapt the weapon to the needs of itHKP-19352Now: $552.46Was: $649.95 -
On Sale
HK MP5, AP5 Optic Mount - Picatinny
MKE
Now: $39.95Was: $49.95MKE HK MP5, AP5 OEM Picatinny Optic Rail MKE Picatinny optic rail for the MP5 platform. OEM part for the Century AP5. Compatible With: HK MP5/SP5HKP-22335Now: $39.95Was: $49.95 -
HK VP9, VP9SK, HK VP40 Locking Block Pin
H&K Heckler & Koch
$10.95H&K HK VP9/VP9SK, HK VP40 Spring Pin, Dowel Pin For Locking Block HK German manufacture. A special spring pin that has an internal spring for support. A must have item as this roll pin can become...HKP-16790$10.95 -
HK91, G3 Cocking Handle - Green Rubberized - Surplus
H&K Heckler & Koch
$8.95HK German HK G3 & HK 91 Older Style HK Green Cocking Handle Used green handled German military surplus cocking handle. No longer made or offered by HK. A genuine Heckler and Koch part. Compatible...HKP-17082$8.95 -
HK91, G3, HK33 Flash Hider Retaining Ring
H&K Heckler & Koch
$1.49HK Flash Hider Retaining Ring Brand new HK German manufacture. HK flash hider, muzzle break retaining ring. This item is the ring that fits inside the flash hider that indexes with the splines of...HKP-16451$1.49 -
Out Of Stock
HK P30L Compensator - MOD 1 - XL
HKP HK Parts
$179.95HK Parts MOD 1 XL Compensator - HK P30L The MOD 1 XL comp delivers the iconic look of our original rail mount comp, but in our updated MOD 1 structure. Like all MOD 1 comps, the P30L XL adds the...HKP-22099$179.95 -
HK G3 Large Buffer Screw
H&K Heckler & Koch
$1.95HK G3 Large Buffer Screw This is the screw that screws in the back of the buffer. This is also needed to install the Magpul PRS2 stock. Used- in good, working condition.HKP-16981$1.95 -
On Sale
HK MP5, MP5K, SP5, SP5K Folding Stock Buffer
HKP HK Parts
Now: $8.21Was: $9.95HK Parts Folding Stock Buffer for HK MP5, SP5, MP5K, SP5K This item used to replace the factory HK buffer on MP5K folding stocks and end cap. This is only usable on the factory OEM stock and end cap...HKP-20833Now: $8.21Was: $9.95 -
On Sale
HK P2000, USPC Magazine - 17 Round - .40 S&W
HKP HK Parts / Heckler & Koch
$71.96 - $79.95HKP 17 Round HK P2000/USPC Complete .40 S&W Magazine HK P2000 +5 magazine extension coupled with a new full-size HK P2000 .40 Cal 12 round magazine. Each unit is then fully assembled as a 17 round HK...HKP-18642-M$71.96 - $79.95