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 MP5, MP5K, SP89 Handguard with Handstop
HKP HK Parts
$29.95HK SP89, SP5K, MP5K - Forearm Compatible With: HK MP5K HK SP89 HK SP5KHKP-17397$29.95 -
HK MP5, HK94, SP89, SP5K Magazine Floorplate - 9mm
H&K Heckler & Koch
$10.95HK MP5, 94, MP5K, & SP-89 9mm Magazine Floor Plate - German HK New HK German manufacture. It will fit all HK MP5/MP5K magazines.HKP-01051$10.95 -
On Sale
Canteen - Military Issue - OD Green - SURPLUS
Now: $2.95Was: $9.95US GI Military Issue Canteen - OD Green - SURPLUS USGI Army/military surplus 2 QT collapsible canteen in OD green. ***Condition and color will vary. Some canteensHKP-20149Now: $2.95Was: $9.95 -
HK MP5, HK90 Series Selector Lever - Ambi - Right Side
H&K Heckler & Koch
$89.95Heckler and Koch Ambidextrous Selector Lever - Right Side This is the right-side selector of the ambidextrous trigger packs. This part will only work on ambidextrous style or pictogram style housing...HKP-00127$89.95 -
On Sale
HK MP5, MP5K, AP5-P Optic Mount - Picatinny
MKE
Now: $39.97Was: $49.95MKE HK MP5K, AP5P OEM Picatinny Optic Rail MKE Picatinny optic rail for the MP5K platform. OEM part for the Century AP5-P and AP5-M. This rail is the K specific length but is compatible with full...HKP-22334Now: $39.97Was: $49.95 -
On Sale
HK MP5, HK416 Barrel - .22LR - 8.5" - Threaded 8x.75
RCM
Now: $183.96Was: $229.95RCM HK MP5 / 416 .22LR Pistol Barrel The first and only replacement barrel for the HK .22LR platforms—this is a game-changer! Previously, replacing the barrel meant the hassle of sending the receiver...HKP-21403Now: $183.96Was: $229.95 -
HK91, G3 Backplate and Recoil Rod Assembly, Complete
H&K Heckler & Koch
$24.95Heckler and Koch Complete Backplate and Recoil Rod Assembly for HK91 and HK G3 Used- Surplus- in good shape. Each backplate comes in the parkerized finished as issued to the German military complete...HKP-16144$24.95 -
HK G3 Buffer Screw Locking Washer
H&K Heckler & Koch
$0.95HK G3 Buffer Screw Locking Washer Used in good, working conditon.HKP-16983$0.95 -
HK G3 Pistol Grip - PSG1 Sniper Style
AC-Unity
$39.95AC-Unity HK PSG1 Style Sniper Pistol Grip The new AC Unity Pistol Grip/Sniper Grip is a great upgrade if you want the PSG1 style grip frame for your HK firearm. The grip features an ambidextrous palm...HKP-21628$39.95 -
On Sale
HK USPC Pistol Light, Laser Adapter - Mount - Gen 2
HKP HK Parts
Now: $25.16Was: $27.95USP Compact Pistol Laser & Light Adapter This is the adapter needed for all HK USP Compact pistols to attach an aftermarket light or laser to the bottom rail of the firearm since HK USP's use a...HKP-00959Now: $25.16Was: $27.95 -
HK33, HK53, HK93, HK91, G3 Bolt Locking Lever Spring for Bolt Head
H&K Heckler & Koch
$4.95HK Bolt Carrier Bolt Locking Lever Spring New HK German factory bolt carrier locking lever spring for locking lever latch. Compatible With: HK G3, HK91 PTR modHKP-16274$4.95 -
On Sale
HK45 Magazine with Extension - 15 Round
HKP HK Parts / Heckler & Koch
Now: $102.56Was: $113.95HKP HK Parts and Heckler and Koch 15 Round Magazine for HK45 HK45 and HK45 tactical +5 magazine extension coupled with a new HK German 10 round HK45 magazine. Each unit is then fully assembled as a...HKP-20788Now: $102.56Was: $113.95