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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HK416, MR556, HK417, MR762, G28 Sniper PSG1 Style Grip - Black
H&K Heckler & Koch
$134.95H&K HK MR556/MR762/416/417/G28 Sniper PSG1 Style Grip - Black HK German PSG1 style sniper factory. Each grip will fit all AR-15/M-16 Lower Receivers As Well. Superior fit & feel to any other grip on the market. HK has hit a home run with...HKP-17692$134.95 -
HK G36, SL8 Bolt Hold Open Catch
H&K Heckler & Koch
$59.95H&K G36/SL8 (5.56/.223) Bolt Hold Open Catch New HK German manufacture. Compatible With: SL8-1 SL8-6HKP-16378$59.95 -
On Sale
HK UMP Caliber Conversion to 9mm Kit - 7.87" Barrel - 30 Round Magazine
Michaels Machines
Now: $1,163.95Was: $1,293.95MM HK UMP, USC Conversion Kit - 9mm This 9mm conversion kit is designed for USC-to-UMP builds and allows existing .45 ACP conversions to be changed over to 9mm with a simple, drop-in parts swap. All components install in minutes and are built to...HKP-02286Now: $1,163.95Was: $1,293.95 -
HK21E Feed Mechanism, Complete - 7.62 / .308
H&K Heckler & Koch
$22,495.95HK21E Feed Mechanism Complete - German HK - DM1 Links New genuine HK date-coded and marked 21E complete feed mechanism. These are the last of the genuine feed mechs available and due to the HK officially discontinuing the 21E, no additional factory units...HKP-00584$22,495.95 -
On Sale
Now: $12.95Was: $16.95 -
Out Of Stock
HK91, G3 Handguard - Slimline Style - Used Excellent Condition
H&K Heckler & Koch
$0.00Used Authentic German Military Surplus G3 Black Slim Line Forearm With Heat Shield Used in excellent shape. For the money, these are a nice addition to the collection. Each item will fit all full forearm length HK 91, G3, PTR style firearms. Used...HKP-18317$0.00 -
On Sale
HK MP5 Trigger Group - 3 Position Navy 0,1 Safe Semi Only - Clipped and Pinned - .40 S&W, 10mm
HKP HK Parts
Now: $656.95Was: $729.95HKP MP5 40/10 Trigger Group 3 Position Navy Housing (0,1) - Safe/Semi Only - Clipped & Pinned Finally a lower cost alternative to the spendy & hard to find all German HK FBI or 0,1 ambidextrous trigger group in a 4 position Navy factory...HKP-17247Now: $656.95Was: $729.95 -
HK MP5K, SP89 Bolt Carrier - Full Auto - 9mm
H&K Heckler & Koch
$1,949.95HK German MP5K Full Auto Bolt Carrier - Latest Style Contour Each bolt carrier is designed to fit all HK MP5K's, SP89, and K-style clones seamlessly. Crafted from the latest tungsten-filled HK German production, these are the final units available,...HKP-00385$1,949.95 -
HK MP5 Trigger Group - Burst 4 Position 0,1,2,F - 9mm
H&K Heckler & Koch
$3,099.95HK Heckler and Koch 9mm Burst 4 Position Trigger Group 0,1,2,F for HK MP5 Each trigger group is brand new and factory fresh, directly from HK, designed specifically for push pin style factory MG's. The 4 position, 2 round burst MP5 trigger group is...HKP-01421$3,099.95 -
HK MP5, G3, HK33 Hammer with Pressure Shank for Burst Trigger Groups
H&K Heckler & Koch
$349.952 or 3-Round Burst Hammer with Pressure Shank HK factory burst trigger pack hammer and pressure shank. Compatible with 2 and 3-round burst trigger packs: (0,1,3,F), (0,1,2,F), (0,1,3), (0,1,2). Compatible With: HK MP5, MP5K HK SP5, SP5K HK91,...HKP-00851$349.95 -
HK USPC, P2000 Magazine - 9mm - 13 Round - LEO Marked
H&K Heckler & Koch
$64.95Heckler and Koch German 13 Round LEO Marked Magazine for USP Compact and P2000 - 9mm Current production HK German 13-round LEO-marked magazine for USP Compact and P2000 pistols chambered in 9mm. Factory magazine for proper fit and function on...HKP-99498$64.95 -
On Sale
HK416, MR556 Handguard - A4 Style - 10" - USED
H&K Heckler & Koch
Now: $379.95Was: $479.95H&K HK416, MR556 A4 10" Quick Disconnect Handguard Factory HK A4 handguard featuring HK's A4 quick disconnect latch. Compatible with A1 and A4 rifles. THESE HANDGUARDS ARE SLIGHTLY USED AND WILL HAVE COSMETIC BLEMISHES. PLEASE REFER TO...HKP-22426-USEDNow: $379.95Was: $479.95