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
HK MP5, MP5K Optic Mount - Low Profile - Picatinny
MFI
$124.95Universal Low Profile Scope Mount for HK MP5K, SP5K This mount differs from our Regular 5.5" Long HK Low Scope Mounts in that it is slightly shorter in length and contoured at the front to allow more area between the cocking handle and the rail. This...HKP-19266$124.95 -
Out Of Stock
HK45, HK45 Tactical Magazine - 10 Round - .45 ACP
H&K Heckler & Koch
$59.95Heckler and Koch HK45 10 Round Magazine The HK45 is the newest .45 caliber pistol HK manufactures. This is the largest mag capacity magazine available for the HK45 and HK45 Tactical pistol. Compatible With: HK45 HK45 Tactical NOT compatible with...HKP-00958-M$59.95 -
On Sale
HK MP5K Stock - KES
Safety Harbor Firearms
Now: $251.95Was: $279.99KES HK MP5K Stock The all-new KES for the MP5k is designed to fit HK clones with two pins affixing the rear receiver cap. Specifications: Guide rods slide into the existing slots present on the receiver Rods machined to go underneath the reinforcing...HKP-21087Now: $251.95Was: $279.99 -
On Sale
HK MP5 Magazine - 9mm - 40 Round
AC-Unity
Now: $19.95Was: $24.95AC-Unity 40 Round HK MP5 9mm Magazine ADD QUANTITIES TO CART TO SEE BULK PRICING DISCOUNTS The AC-Unity 30 round MP5 magazine is a lightweight, impact resistant and reliable magazine for all 9mm HK MP5, SP5, MP5K, SP5K and clones. Constructed from...HKP-20156Now: $19.95Was: $24.95 -
Out Of Stock
HK Mark 23 Magazine - 12 Round - .45 ACP
H&K Heckler & Koch
$64.95HK German Mark 23 & SOCOM 12 Round .45 Cal Magazine New factory fresh German HK manufactured. The real deal steel-bodied factory fresh magazine with the upgraded maritime finish. Compatible With: HK Mark 23 SOCOM .45HKP-00295-M$64.95 -
Barrel O-Ring - .45 ACP
H&K Heckler & Koch
$4.95Heckler and Koch .45 ACP Caliber Barrel O-Ring in Black A great spare and a much-needed part for your HK barrel. This factory part is a high-wear item, as the O-ring provides the seal between the slide and the barrel, which provides a secure lockup with...HKP-00296$4.95 -
On Sale
Uzi Magazine - 9mm - 32 Round - Military - Used
IMI
Now: $18.95Was: $24.95Uzi 32 Round 9mm Magazine - IMI - Used Good Condition+ Factory Original Israeli IMI all steel production, 32rd 9mm magazines produced for the German army. German mags were military, they were not offered as a commercial magazine. As an added bonus these...HKP-18683Now: $18.95Was: $24.95 -
On Sale
HK VP9, P30 Magazine Extension Kit - +5 Round
HKP HK Parts
$31.95 - $43.95HK Magazine Extension +5 Capacity For HK VP9, VP40 & P30, P30L The new and improved Gen 2 Model is now shipping! HK Parts magazine extension +5 kit adds five additional rounds to the HK VP9/P30 magazine with the simple swap of the floor plate and...HKP-21108-M$31.95 - $43.95 -
Out Of Stock
HK MP5, SP5 Locking Piece #27 - 90 degree
RCM
$39.95HK MP5, SP5 Locking Piece #27 - 90 degree Machined and properly heat treated from ordnance grade steel. A must have component for users running a suppressed set up or cycling a variety of ammunition. This will assist with fine-tuning pistol...HKP-21334$39.95 -
On Sale
HK Recoil Rod Guide Ring - Recoil Rod Assemblies - Enhanced
HKP HK Parts
Now: $1.45Was: $2.39HKP Recoil Rod Guide Ring For Recoil Rod Assemblies - Enhanced New enhanced material for greater longevity and durability. Our US made recoil rod guides are the made from the strongest most durable material available much better than the basic nylon as...HKP-17829Now: $1.45Was: $2.39 -
On Sale
HK MP5, SP5 Enhanced Selector Kit - Polymer and SL Grips
Magpul
Now: $42.95Was: $47.95Magpul Industries HK MP5/SP5 Enhanced Selector Set The Magpul ESK (Enhanced Selector Kit) offers a versatile range of selector levers specifically designed for the Magpul SL Grip Module and HK Polymer Trigger Housings. The ESK delivers a modular,...HKP-19308Now: $42.95Was: $47.95 -
On Sale
HK91, G3 Cocking Handle - Extended
HKP HK Parts
Now: $51.95Was: $64.95HKP HK91, G3 Extended Cocking Handle - Extended Extended cocking handle designed to improve grip and leverage on HK91 and G3 pattern firearms. The enlarged profile provides increased surface area for easier manual operation, particularly during charging...HKP-00199-MNow: $51.95Was: $64.95