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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Out Of Stock
HK33, HK53, HK93 Cocking Lever Axle Pin
H&K Heckler & Koch
$0.00New HK German 93, 33, & 53 Cocking Handle Axle Pin This is a new HK factory part made for the .223 HK rifle for the HK93/33/53, not surplus or a cut-down .308 part, as others offer. This part is the axle pin that holds the cocking handle in place on...HKP-01060$0.00 -
On Sale
HK33, HK53, HK93 Trigger Group - 4 Position 0,1,3,F - Complete
H&K Heckler & Koch
Now: $2,989.95Was: $3,399.95Heckler and Koch HK33, HK53, HK93 4 Position Burst Trigger Group Complete (0,1,3,F) Factory German HK 4-position burst trigger group configured for push-pin style receivers. This complete assembly is designed for HK93, HK33, and HK53 platforms and...HKP-00018Now: $2,989.95Was: $3,399.95 -
HK MP5, MP5K Locking Piece - 100 Degree - Extra Low Impulse - .40 S&W / 10mm
HKP HK Parts
$49.95HKP MP5/K 40/10 Locking Piece - Extra Low Impulse Marked 100 Degree For the MP5 40 or 10mm Firearms. Made out of enhanced material and heat-treated to spec. The #100 degree locking piece is an extra low impulse 40/10 locking piece. To be used with MP5...HKP-18273$49.95 -
HK MP5 40/10 SEF Navy Style Trigger Housing
H&K Heckler & Koch
$99.95 - $179.95H&K MP5 40/10 SEF Navy Style Trigger Housing A perfect upgrade for your HK MP5 40/10 build. This is the only SEF-style housing available for the MP5 40/10 family of firearms. Each housing is professionally clipped and pinned and set up for the...HKP-00445$99.95 - $179.95 -
HK MP5K, SP89 Recoil Guide Rod - Stripped
H&K Heckler & Koch
$14.95New HK German MP5K, SP89 Recoil Guide Rod Bar Incomplete Recoil spring rod stripped. Compatible with all MP5K & SP89 recoil springs.HKP-01693$14.95 -
Out Of Stock
HK MP5K 9mm Complete PDW FBI Trigger Group
H&K Heckler & Koch
$799.95H&K MP5K 9mm Complete PDW FBI Trigger Group This is a great upgrade and investment for your factory swing down MP5K or PDW (shown with an optional small push pin installed). New HK German with all the latest HK upgraded parts. Compatible With: HK...HKP-02699$799.95 -
HK MP5, HK91, G3, HK33, HK53, HK93 A3 Stock Locking Lever with Spring
H&K Heckler & Koch
$199.95HK MP5, HK91, G3, HK33/53/93 A3 Retractable Stock Locking Lever With Locking Spring Compatible With: MP5 (NOT compatible with MP5 .22 LR) HK G3, HK91 HK33, HK53, HK93HKP-02560$199.95 -
HK CC9 Magazine +3 Extension Kit - 9mm
HKP HK Parts
$49.95HKP HK CC9 +3 Magazine Extension +3 magazine extension for the HK CC9. This low-profile base pad increases a standard 12-round CC9 magazine to 15 rounds. Machined in the U.S. from aircraft-grade hard coat anodized aluminum with steel hardware...HKP-22488-M$49.95 -
Arm Brace Hook
MI Midwest Industries
$97.95Midwest Industries Arm Brace Hook The Arm Brace Hook is designed for pistols that use a 1.2" diameter buffer tube. It provides a secure and stable point of contact while offering a built-in, ambidextrous QD sling interface. Specifications: Works with...HKP-22417$97.95 -
HK MP5K End Cap w/ Swivel Attachment
MKE
$69.95MKE HK MP5K End Cap with Swivel Attachment Durable factory-style end cap designed for MP5K platforms. Provides a secure sling mounting point for MP5K pistols. Compatible With: HK MP5K HK SP89 HK SP5K (may require some fitting, install lower pin before...HKP-22373$69.95 -
HK CC9 Mod 1 Compensator Rail Set
HKP HK Parts
$28.95HKP HK Parts HK CC9 Rail and Plate Insert - Replacement MOD 1 Insert Kit Replacement Picatinny rail and smooth plate inserts with hardware for the MOD 1 compensator. Compatible With: HK CC9 MOD 1 CompensatorHKP-22372$28.95 -
AP51 MOE PR Stock - PDW
Magpul
$249.95Magpul Century AP51 PDW MOE PR Stock Designed for the Century AP51 PDW platform, this adapter ensures a precise fit and solid lockup for stock installation. Built for durability and proper alignment, it maintains correct stock geometry and function...HKP-22346$249.95