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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On Sale
HK UMP Barrel - 9mm - Threaded with 3 Lug
Michaels Machines
Now: $494.96Was: $549.95HK UMP 9mm Barrel - Threaded - 3-Lug Specifications: 3Lug Threaded Compatible WiHKP-02278Now: $494.96Was: $549.95 -
HK91, G3 Match Trigger Group - Sniper
H&K Heckler & Koch
$749.95HK German SEMI .308 Trigger Group Complete For G3, 91 & PTR Models The HKP match trigger group starts life as a standard 12lb stock trigger pack before being carefully converted by the legendary...HKP-17031$749.95 -
HK51K Barrel - 7.62 / .308 - 5.3" - Threaded 15x1 RH
RCM
$164.95RCM HK51K (7.62x51/.308) Barrel - Threaded 15x1 RH Made to exact HK51K specifications from cold hammer forged steel, this barrel matches the quality of HK German barrels. Ideal for custom builds and...HKP-02392$164.95 -
Out Of Stock
HK MP5 Magazine Follower Bolt Catch Screw - Threaded - .40 S&W, 10mm
H&K Heckler & Koch
$34.95Heckler and Koch Threaded Bolt Catch for Magazine Follower for your HK MP5 40,10 This is the small threaded screw that fits into the bolt-hold-open axle and makes contact with the magazine follower...HKP-00454$34.95 -
On Sale
HK MP5 Barrel - .40 S&W - Threaded 9/16x24 with 3 Lug
HKP HK Parts
Now: $224.96Was: $249.95HKP HK MP5 .40 S&W Barrel - Threaded 9/16x24 - 3-Lug Newly manufactured US Made MP5 .40 S&W barrel that is 3-lugged and threaded with matching thread protector. This is a barrel offering that is made...HKP-16402Now: $224.96Was: $249.95 -
HK MP5 Parts Kit - A2 Buttstock and SEF Lower - 9mm - 100% German
H&K Heckler & Koch
$2,239.95HK German MP5 9mm Used Parts Kit Complete (Minus Receiver) All MP5 Kits Include: HK 3-Lug MP5 Barrel - cold hammer forged Cocking Tube FrHKP-00771$2,239.95 -
On Sale
HK MP5 Barrel - 9mm - Threaded 1/2x32 with 3 Lug
B&T Brugger & Thomet
Now: $404.96Was: $449.95B&T HK MP5 9mm Barrel - Threaded 1/2x32 - 3-Lug New from B&T Switzerland, this cold hammer-forged (CHF) and nitrided barrel is manufactured to exact HK factory specifications exclusively for MP5HKP-17956Now: $404.96Was: $449.95 -
HK MP5SD Brass Catcher - Quick Detach
B&T Brugger & Thomet
$210.00B&T MP5SD Brass Catcher For Use With B&T Handguard The B&T brass catcher for the MP5SD locks into perfect position when mounted to the matchedHKP-18099$210.00 -
On Sale
HK MP5 Selector Lever Conversion Set - 4 Position Burst To 0,1
H&K Heckler & Koch
Now: $129.95Was: $179.95HK 4 Position Burst To Semi ONLY Conversion Selector Lever Set - German HK The German HK selector lever set will allow the use to convert the following: 0,1,3,F Trigger packs 0,1,2,F Trigger packsHKP-17996Now: $129.95Was: $179.95 -
FSA Cheek Riser for Strike Folding Stock and Brace
Strike Industries
$29.95Strike Industries FSA Cheek Riser for Single or Dual Folding Stocks and Braces Adds an adjustable cheek rest for improved comfort and a more consistent cheek weld on Strick Industries single and dual...HKP-22783$29.95 -
On Sale
HK91, G3 Telescopic Stock - 4 Position
MKE
Now: $466.16Was: $517.95MKE HK91 G3 4 Position Telescopic Stock Telescopic stock designed for HK91 and G3 platform rifles. Modified to provide four adjustable length-of-pull positions to customize fit...HKP-22712Now: $466.16Was: $517.95 -
HK416, MR556 2-Stage Trigger - Full-Auto
H&K Heckler & Koch
$449.95HK416, MR556 2-Stage Trigger - Full-Auto Factory HK 2-stage full-auto HK416 trigger. Compatible with semi-auto HK416's and MR556's. We have a small number of these triggers and HK will not be...HKP-22423$449.95