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 P30SK Firing Pin Safety Pin
H&K Heckler & Koch
$4.95H&K HK P30SK Firing Pin Safety Pin This is a factory original HK part manufactured in Germany.HKP-18524$4.95 -
On Sale
Tri Illuminated Scope with Fiber Optic Sight
AIM
Now: $92.95Was: $109.954X32 TRI ILLUMINATED SCOPE W/FIBER OPTIC SIGHT ARROW PLX RETICLE 4X32 TRI ILLUMINATED SCOPE W/FIBER OPTIC SIGHT MIL-DOT RETICLE 4 X 32 Prismatic Scope With Illuminated Reticle. The optic is 100% shock resistant, recoil and fog proof, as well as entirely...HKP-19534Now: $92.95Was: $109.95 -
HK UMP, USC Lower Axle
H&K Heckler & Koch
$9.95HK UMP & USC Lower Axle - German 3 X lower axle pins are used for each trigger group or lower all pins are the same size, except the mag release axle on the USC model.HKP-01893$9.95 -
HK91, G3 Lower, Complete - SEF Full Auto - Surplus
H&K Heckler & Koch
$369.95Heckler and Koch German Surplus Complete Lower with the Black Grip for HK G3 HK G3 SEF Steel Lower Complete. Each lower includes a full auto complete trigger pack, selector lever, black grip, metal SEF grip frame, grip screw with screw washer. All...HKP-17653$369.95 -
On Sale
HK416, MR556, AR-15 Magazine - PMAG M3 - 40 Round
Magpul
Now: $20.95Was: $24.95Magpul PMAG 40 Round AR-15 5.56/.223 Magazine Latest M3 generation, NON-windowed PMAG (Polymer Magazine). Featuring a pop-off storage/dust cover that alleviates pressure from the magazine feed lips, allowing for long-term storage of loaded magazines...HKP-16699Now: $20.95Was: $24.95 -
On Sale
HK91, G3, PTR Magazine - 20 Round - Steel - Like New
Rheinmetall
Now: $25.95Was: $28.95Rheinmetall HK G3, HK91, and PTR91 20 Round Steel Magazine - Like New Steel magazine for HK91, G3, and PTR91 pattern rifles with a 20-round capacity. Originally made for the German army and offered in like new condition. These are no longer in...HKP-22563Now: $25.95Was: $28.95 -
On Sale
HK USP Tactical Rail Mount Compensator, Threaded Barrel - .45 ACP
HKP HK Parts
Now: $143.95Was: $179.95HKP HK USP/Tactical .45 ACP Rail Mount Compensator with Threaded Barrel Crafted from aircraft-grade billet aluminum and finished in durable cerakote. Features multiple muzzle ports and the additional weight to significantly reduce both muzzle flip and...HKP-21343Now: $143.95Was: $179.95 -
Out Of Stock
HK G36, SL8 Ambidextrous Sling Pin
H&K Heckler & Koch
$49.95HK German G36/SL8 Ambidextrous Sling Pin This part replaces all of the HK SL8 or G36 push pins with a loop for the sling. This can be moved to attach a sling on either the left or right sides with ease.HKP-00619$49.95 -
HK416 Ejection Port Axle
H&K Heckler & Koch
$4.95Ejection Port Axle - Steel- HK 416 New HK USA manufacture for the HK 416 family of firearms. This is the axle that holds the ejection port cover in place on the upper receiver.HKP-20039$4.95 -
HK Firearm Cleaning Kit - 7.62x51 / .308
HKP HK Parts / Heckler & Koch
$89.95H&K (7.62x51/.308) Cleaning Kit New Factory HK German 91, G3, PTR, or other HK .308 cleaning kit for all .308 HK's or clones. Includes: Cleaning rod for short and long barrels Adapter for cleaning tools 8-32 Patch holder Bore brush Chamber...HKP-01549$89.95 -
HK Ambidextrous Sling Pin Locking Knob
H&K Heckler & Koch
$11.95New HK German Ambidextrous Sling Pin Locking Knob These are common replacement items, they can become loose as the O-ring wears and falls off. Be sure to order extra O-rings to avoid losing the locking nut. This is a common replacement part for those...HKP-01042$11.95 -
Out Of Stock
HK90 Series Catch Lever Axle - Ambi Trigger Packs
H&K Heckler & Koch
$5.95H&K Catch Lever Axle For Ambidextrous Trigger Packs This is the axle that is found in all ambidextrous trigger packs for the 90 series that retains the catch lever assembly.HKP-01552$5.95