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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HK90 Series Cocking Tube Extrusion - 12" Section
H&K Heckler & Koch
$54.95H&K Factory Cocking Tube Extrusion 12" Section HK cocking tube section is perfect for custom HK cocking tube projects. Overall length is 12" long. All steel and ready for that custom project or...HKP-13487$54.95 -
On Sale
HK MP5K, SP89 Grip Frame - Semi Auto SEF - Metal Style
HKP HK Parts
Now: $121.09Was: $189.95HKP HK Parts and Heckler and Koch HK MP5K, SP89 9mm SEF Metal Style Grip Frame Each German HK housing started out as a factory HK German select fire metal housing. Each housing was modified by...HKP-16490Now: $121.09Was: $189.95 -
On Sale
HK MP5, HK33, HK53, HK93 Grip Frame Housing - 2 Position S,F,Pictogram - Clipped and Pinned - 9mm, 5.56 / .223
PTR
Now: $89.96Was: $99.95PTR HK MP5 & 93/53/33 (9mm & 5.56/.223) 2 Position (S,F Pictogram) Grip Frame Housing - Clipped & Pinned This is made by PTR-91 to exact HK specs. These housings come clipped and ready for the...HKP-00840Now: $89.96Was: $99.95 -
HK416, MR556 Buffer Tube - Enhanced - Commercial
H&K Heckler & Koch
$249.95HK 416, MR556 OTB (over the beach) Buffer Tube, Receiver Extension - Commercial: Genuine HK German manufactured 416, MR556 new style latest generation marine environment & over the beach buffer tube...HKP-15424$249.95 -
On Sale
HK MP5, G3, MKE AP5 Elbow Spring with Roller - Full-Auto
MKE
Now: $4.46Was: $4.95MKE AP5, HK MP5, G3 Full-Auto Elbow Spring with Roller This elbow spring is manufactured by MKE from steel and is used in MP5 and G3 pattern trigger packs. It provides proper tension and function for...HKP-22489Now: $4.46Was: $4.95 -
On Sale
HK MP5, G3, HK93 Magazine Catch Push Button- Used
H&K Heckler & Koch
Now: $3.71Was: $8.95H&K MP5, G3, PTR, HK93 Push Button for Magazine Catch - Used Factory original HK push button replacement part. Limited quantity available.HKP-99316Now: $3.71Was: $8.95 -
HK416, MR556 Flash Hider - ROTEX IIA - Threaded M15x1
B&T Brugger & Thomet
$119.95B&T Brugger and Thomet's Flash Hider for your HK416, HK33, HK53, and HK93. Swiss-made B&T flash hider for all 5.56 / .223 firearms threaded in M15x1. Features a precision machined interface for...HKP-22215$119.95 -
On Sale
HK P30L MOD 1 Compensator - Threaded Barrel
HKP HK Parts
Now: $143.96Was: $179.95HKP HK P30L MOD 1 Compensator - 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,...HKP-21871Now: $143.96Was: $179.95 -
On Sale
Blast Can - Threaded 1/2x28 - 9mm, 5.56 / .223
MI Midwest Industries
Now: $35.06Was: $38.95MI Blast Can 1/2x28 Thread (5.56/9mm) Specifications: Directs muzzle blast forward on short barrel rifles and pHKP-21535Now: $35.06Was: $38.95 -
On Sale
HK MP5K Trigger Housing - AR
Magpul
$223.09 - $349.95Magpul HK MP5K AR Trigger Housing This match-grade trigger housing is expertly crafted to elevate the performance of your HK MP5K. Our enhanced HK-AR Navy ambidextrous lower housing and Magpul MOE...HKP-21379-M$223.09 - $349.95 -
On Sale
HK45C Railok™ Threaded Barrel Compensator
HKP HK Parts
Now: $97.46Was: $189.95HK Parts Railok™ Mounting System Threaded Barrel Compensator: H&K HK45C The HK Parts Railok™ mounting system compensator strikes a seamless balance of form and function. Users will immediately...HKP-21264Now: $97.46Was: $189.95 -
On Sale
HK UMP Enhanced Top Rail - Red
HKP HK Parts
Now: $31.84Was: $49.95HKP HK UMP Enhanced Top Rail - Red HK USC, UMP top receiver rail with hardware. The extended length allows the use of all optics that fit on a Picatinny rail. This unit has a contoured no snag design...HKP-20812Now: $31.84Was: $49.95