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 StockOn Sale
HK MP5, HK90 Series Ejector Lever Axle
MKE
Now: $10.10Was: $17.95MKE Trigger Pack Ejector Lever Axle Fits all SEF & Ambidextrous style HK trigger packs regardless of caliber. MKE product made on HK tooling. Fits all of the following 90 series trigger packs:HKP-22241Now: $10.10Was: $17.95 -
HK VP9, VP9SK, VP40 Trigger Spring
H&K Heckler & Koch
$3.95H&K HK VP9/VP9SK, HK VP40 Trigger Return Spring HK German stock trigger return spring. A must have spare part as the factory spring will wear with use. The TRS can also be damaged upon install if the...HKP-16783$3.95 -
On Sale
HK91, G3 Barrel - FMP - 17.7" - Threaded 15x1
FMP HK CONTRACT
Now: $80.96Was: $89.95HK G3, 91 Barrel - 7.62/.308 - 17.7" - Threaded 15x1 Original 17.7" FMP G3 barrel threaded 15x1 RH. Portuguese manufactured to HK's military specifications. These surplus barrels are perfect for...HKP-22532Now: $80.96Was: $89.95 -
HK MP5 Mach 3-Lug Mount - 9mm
Kaw Valley Precision
$89.99Kaw Valley Precision 9mm Mach 3-Lug Mount The Kaw Valley Precision MACH 3-Lug Mount is a fully captured, enclosed system designed for use with the KVP MACH Linear Comp system. By utilizing 1-1/8"x28...HKP-19995$89.99 -
On Sale
HK416, MR556, AR-15, M4 Magazine - TMAG - 30 Round
Magpul
Now: $22.46Was: $24.95Magpul AR/M4 30 Round TMAG Magazine The TMAG 30 AR/M4 GEN M3 is a highly reliable, translucent, 30-round magazine for STANAG-compatible weapons chambered in 5.56x45 NATO/.223 Remington. Molded from a...HKP-21149Now: $22.46Was: $24.95 -
HK P30, P2000 Combat Defensive Action Upgrade For LEM 4.1 Pistols
H&K Heckler & Koch
$89.95H&K HK P Series Combat Defensive Action Upgrade For LEM 4.1 Pistols Found on all (European CDA) variant 4.1 models. This drop in LEM upgrade kit is a great trigger upgrade that reduces the trigger...HKP-17647$89.95 -
On Sale
HK90 Series Cocking Tube End Cap - Aluminum
HKP HK Parts
$10.47 - $14.95H&K Cocking Tube End Cap - Aluminum - US Made Made from weight-saving aircraft-grade aluminum alloy. Compatible With: All 90 series HK firearms and clones that use a triple frame/siHKP-02806-M$10.47 - $14.95 -
Out Of Stock
HK MP5, MP5K Magazine Clamp - Dual - 9mm - Bundle
H&K Heckler & Koch
$299.95HK German MP5, SP5, MP5K, SP5K 9mm Mag Clamp Bundle Allows the user to clamp 2 MP5 9mm magazines together for quick mag changes. Perfect for swapping between different types of ammo and faster mag...HKP-20492$299.95 -
HK VP9, P30 Extension Kit - Magazine - 17 Round
HKP HK Parts
$39.95HK Parts Magazine Extension +5 Capacity for HK 17 Round Magazine - HK VP9, P30, P30L New & improved Gen 2 model! HK Parts Magazine Extension +5 kit adds 5 additional rounds to the HK VP9/P30 17 round...HKP-19296$39.95 -
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - RAL8000
H&K Heckler & Koch
$98.99New OEM Factory German - H&K MP5, SP5, SP5K, MP5K 9mm - 30 Round Curved Magazine - RAL 8K Factory Heckler & Koch 9mm, 30-round magazine finished in RAL8000. These magazines are painted by the...HKP-19354$98.99 -
Out Of Stock
USA HK MP5 9mm Ejector Lever
PTR
$34.95Ejector Lever - HK MP5, 94 & MP5K, SP-89 - 9mm- USA HK 9mm ejector lever. Fits all of the HK 9mm variants, stamped, formed, heat treated, secondary machined & hardened. This USA made ejector is...HKP-19660$34.95 -
On Sale
HK MP5K, SP89, SP5K Side-Folding Brace - 9mm
SB Tactical
Now: $224.96Was: $249.95HK MP5K, SP89, SP5K & Clone - Side Folding Pistol Stabilizing Brace MP5K, SP5K, Zenith Z5P, Z-5K Folding Stabilizing Brace System. These are the last remaining units with an aluminum folding adapter...HKP-18016Now: $224.96Was: $249.95