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 UMP Firing Pin Retainer Pin
H&K Heckler & Koch
$7.95HK UMP Firing Pin - Retainter Pin This is the pin that trips the trip lever on the UMP lower. Compatible With: HK UMPHKP-01894$7.95 -
HK91, G3 Magazine Catch - Used
H&K Heckler & Koch
$16.95Heckler and Koch Magazine Catch, USED for HK91, HK G3, and PTR91 The highest quality magazine catch available. High quality HK German production units are slightly used HK Parts from Heckler and Koch Germany. These also have the proper cut in them and do...HKP-18693$16.95 -
HK91, G3 Rear Sight
H&K Heckler & Koch
$28.95HK German Factory Rear Sight Assembly With Drum Assembly - New Each rear sight is a brand new, old stock genuine Heckler & Koch rear sight. Comes as shown. Mounting hardware is offered separately. Now out of production, it's rare and hard to find in...HKP-00361$28.95 -
HK MP5K, SP89, SP5K Rear Sight Drum - 9mm
H&K Heckler & Koch
$79.95HK German MP5K, SP89 and SP5K Factory Rear Sight Drum New factory correct German HK MP5K, SP89, and SP5K rear sight drum. Compatible With: MP5K SP89 SP5K Other custom builds or clones Please Note: Many shooters prefer to upgrade to the MP5 rear...HKP-01110$79.95 -
HK MP5, HK94 Vented Wide Handguard - Vertical
HKP HK Parts
$44.95HKP MP5 & HK94 Vented Wide Forearm - Vertical New US manufactured (922r compliant) HK MP5 & HK94 vented wide handguard with the 90 degree vents. This style of venting allows better handling and superior barrel cooling abilities. Available...HKP-16856$44.95 -
On Sale
HK MP5, MP5K Rear Sight Base
HKP HK Parts
Now: $15.95Was: $19.95HKP HK Parts Rear Sight Base - Weldment for HK MP5 and HK MP5K The only factory-correct sight base with the factory HK German side axis grooves. Compatible With: MP5, MP5K SP89, HK94 MP5 40, MP5 10 MAC-5 clones may require custom fitment...HKP-02450Now: $15.95Was: $19.95 -
On Sale
HK MP5 9mm SEF Semi-Auto - Trigger Pack - Match
HKP HK Parts
Now: $383.95Was: $479.95HKP MP5 9mm SEF Semi Trigger Pack - Match We have one of the best HK gunsmiths in the country that is able to take hand picked German HK F/A trigger packs and modify them to semi-auto. This is done with the best and most precise machinery and jigs...HKP-17658Now: $383.95Was: $479.95 -
HK416, MR556, HK417, MR762 Folding Rear Sight - 3mm
H&K Heckler & Koch
$344.95Heckler and Koch 3mm Flip Up Rear Sight for HK416, MR556, HK417, MR762 HK factory quick-release flip-up rear sight for MR556, MR762, HK416, and HK417 platforms. This rear sight attaches directly to any standard Picatinny rail using HK’s push-button...HKP-01405$344.95 -
On Sale
HK MP5, 90 Series, AP5 Sear - Friction - SEF and Navy Trigger Packs
MKE
Now: $6.95Was: $8.95MKE AP5, MP5, 90 Series Friction Sear for SEF and Navy Trigger Packs Steel friction sear manufactured in Turkey for HK 90 Series trigger packs. Designed for use in SEF and Navy-style configurations, this component is commonly referred to as the catch...HKP-22521Now: $6.95Was: $8.95 -
Out Of Stock
HK MP5K, SP5K Super Safety Lower
AS Designs
$649.95AS Designs Super Safety Lower for the HK MP5K & SP5K Platform The ASD Super Safety Lower allows for faster follow-up shots by resetting after each shot. This is a true drop-in trigger and housing assembly featuring SEMI, SUPER, and SAFE...HKP-22386-M$649.95 -
On Sale
HK P2000 MOD 1 Compensator
HKP HK Parts
Now: $143.95Was: $179.95HKP HK P2000 MOD 1 Compensator - Non-Threaded Barrel The HK Parts MOD 1 compensator strikes a seamless balance of form and function. Users will immediately notice the reduction in muzzle flip and recoil, getting you back on target quicker. Each MOD 1...HKP-21815Now: $143.95Was: $179.95 -
On Sale
Pitchfork B&T MP9 Patch
B&T Brugger & Thomet
Now: $8.95Was: $10.00Pitchfork B&T MP9 PatchHKP-21745Now: $8.95Was: $10.00