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
HK21 Locking Piece - 50 Degree
H&K Heckler & Koch
$149.95H&K HK21 (7.62x51/.308) Locking Piece - New Factory, Old Stock The HK21 standard 50-degree locking piece. Each LP includes the hardness "dot" to identify them as HK 21 locking pieces.HKP-01745$149.95 -
Out Of Stock
HK91, G3 Trigger Group (0,1) - 2 Position - Safe / Semi Only
HKP HK Parts
$429.95G3, 91, PTR Trigger Group 2 Position Housing 0,1- Safe, Semi Only Finally a lower cost alternative to the spendy & rare all-German HK FBI or 0,1 ambidextrous trigger group in a 2 position factory German HK housing. Each trigger group features a...HKP-17235$429.95 -
On Sale
HK33, HK93 Handguard - Key Mod
HKP HK Parts
Now: $103.95Was: $129.95HK93, 33 & PTR Low Profile Key Mod Forearm The KeyMod tactical hand guard easily installs on your firearm with minimal effort and locks up solid. No fitting required. Designed from the ground up by roller lock & HK enthusiasts with your shooting...HKP-17179Now: $103.95Was: $129.95 -
HK MP5K Trigger Group, Complete - 4 Position Semi Only - Clipped and Pinned
H&K Heckler & Koch
$1,499.95MP5K Semi Only 4 Position Trigger Group Complete With Safe, Semi functions only but provides the look and feel of the four position (0,1,3, F) housing. New HK German. Compatible With: MP5K SP89HKP-00185$1,499.95 -
HK MP5K Trigger Group - Navy SEF Semi Auto - Clipped and Pinned
H&K Heckler & Koch
$599.95HK Heckler and Koch Navy Style SEF Semi Trigger Group - C/P for HK MP5K HK German manufactured parts. Each unit comes with the professionally converted SEF navy style SEF clipped and pinned housing and semi auto only German HK trigger pack. All trigger...HKP-18055$599.95 -
Out Of Stock
Re-Timed Hammer for Registered Sear Packs - Belt Fed
Michaels Machines
$198.95MM Registered Sear Pack - Re-Timed Hammer - Belt-Fed Billeted re-timed Hammer that has been professionally re-timed by Michael's Machines for belt-fed HK firearms with registered sear packs. A one piece billeted HK re-timed hammer is the necessary...HKP-16996$198.95 -
Out Of Stock
HK MP5 Trigger Group - Burst 4 Position 0,1,3,F - USED
H&K Heckler & Koch
$2,599.95HK Heckler and Koch 4 Position Burst Trigger Group 0,1,3,F, USED Condition for HK MP5 HK German 4 Position 3 Round Burst Trigger Group – complete and ready for use. This is a high-quality, fully functional trigger group featuring a versatile 4...HKP-02610$2,599.95 -
On Sale
HK MP5 Folding Stock - 3 Position Adjustable
B&T Brugger & Thomet
Now: $311.95Was: $389.95B&T Brugger & Thomet 3 Position Adjustable Folding Stock for HK MP5 Swiss made B&T folding and length adjustable stock for the HK MP5. This is a military grade stock as supplied by B&T to military and law enforcement units world-wide...HKP-18100Now: $311.95Was: $389.95 -
HK MP5 Trigger Group with With ESSL - Navy 3 Position 0,1,Full - 9mm
H&K Heckler & Koch
$2,549.95H&K Heckler and Koch 3 Position Navy Trigger Group 0, 1, Full with Extended Safety Selector Lever for HK MP5 New factory German complete trigger group with the left side extended lever. No longer available and just a few units remaining. Compatible...HKP-00159$2,549.95 -
HK MP5, HK94 Trigger Group - Ambi FBI 0,1 - Semi Auto - Clipped and Pinned
H&K Heckler & Koch
$799.95H&K Clipped & Pinned Semi-Auto FBI (0,1) Ambidextrous Trigger Group HK German factory Clipped & Pinned Semi-Auto FBI (0,1) Ambidextrous Trigger Group in 9mm For Your HK94 Or MP5 Conversion, this part updates your HK to the newer style...HKP-00154$799.95 -
On Sale
HK G36 2 Position Lower Housing - FDE
HKP HK Parts
Now: $123.95Was: $154.95HK G36 (5.56/.223) 2 Position (0,1 Pictogram) Lower Housing This lower housing is available without internals, a unique offering as G36 lowers previously only came as complete trigger groups with both grip and internals. Ideal for SL8 to G36 conversions,...HKP-22510Now: $123.95Was: $154.95 -
On Sale
Muzzle Brake - 5.56 and .308 - Threaded 5/8x24 RH
HKP HK Parts
Now: $23.95Was: $29.95HKP muzzle brake threaded 5/8x24 RH for 5.56/.223 and 7.62x51/.308 firearms This HKP muzzle brake is manufactured in the USA to HK specifications and is designed for use on 5.56 and .308 rifles. It features a partially milled birdcage-style design...HKP-22508Now: $23.95Was: $29.95