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
HK91, G3 Magazine Loader
H&K Heckler & Koch
$0.00HK Factory Loader for HK 91/G3 Magazines Compatible With: HK 91 magazines HK G3 magazines PTR-91 Magazines HK PSG1 magazines HK MSG-90 magazines HK 90 series 308 magazinesHKP-00221$0.00 -
HK91, G3, PTR Folding Stock
Choate
$144.95HK 91, G3, PTR Side Folding Stock No gunsmith is needed as this is an easy install using your hardware from your existing fixed A2 stock. This counts as one US-made compliant part. Compatible With: HK91 G3 PTR91 Also fits HK93 and 33-style rifles...HKP-00516$144.95 -
Raddlock 91/G3 (7.62x51/.308) Magazine Sled
Raddlock
$12.95Magazine Block for HK G3,91, PTR .308 Rifles. The Raddlock magazine block converts a mag-fed rifle to a single-shot rifle as dictated by certain restrictive states. Once installed, the rifle will only be able to be loaded through the ejection port...HKP-02448$12.95 -
HK91, G3 4 Position (0,1,3,F Pictogram) Trigger Housing - Push Pin
H&K Heckler & Koch
$459.95H&K 91/G3 (7.62x51/.308) 4 Position (0,1,3,F Pictogram) Trigger Housing - Push Pin This authentic German HK trigger housing features a 4 position pictogram (0,1,3,F) and is designed for push pin style G3 or Zenith firearms. It is configured for use...HKP-17823$459.95 -
Out Of Stock
HK91, G3 Slimline Handguard
PTR
$39.95New Slim Line HK91, G3, PTR Forearm- US Each forearm is a new US made offering made on the original HK tooling acquired by PTR91. Black in color, no internal heat shield. This hand guard also counts as 1 desirable US compliant part for your HK 91, G3...HKP-16251$39.95 -
HK Fixed Stock Buttpad - Alpine Green
H&K Heckler & Koch
$79.95H&K Fixed Stock Buttpad - Alpine Green Perfect for A2 G3, 91, PTR91 & HK33, 53, 93 fixed stocks. This is a factory German brand new in HK wrapping German part.HKP-17027$79.95 -
On Sale
HK MP5K Barrel - .40 S&W - Threaded 9/16x24 with 3 Lug
HKP HK Parts
Now: $199.95Was: $299.95HK MP5K .40 S&W 3-Lug Barrel with Thread Protector - Threaded 9/16x24 3-lugged Barrel with a 9/16x24 thread protector. Specifications: 3-lugged barrel Includes 9/16x24 thread protector Compatible With: HK MP5K .40 S&WHKP-02318Now: $199.95Was: $299.95 -
HK MP5 Bolt Carrier - Full Auto - .40 S&W / 10mm / .357 SIG
RCM
$157.95MP5 40, 10mm - Full Auto Bolt Carrier Machined completely from billet ordnance steel. This carrier is made to the latest specs and are Tungsten filled and heat treated providing the finest American made carrier available. Compatible With: MP5 40 MP5...HKP-01192$157.95 -
HK MP5 Trigger Group - Navy 3 Position - .40 S&W / 10mm
H&K Heckler & Koch
$2,499.95HK German MP5 40/10/ 3 Position Navy (0,1,F) Trigger Group This Trigger Group Is A Factory Push Pin Safe, Semi, Full Navy Ambidextrous 3 Position Trigger Group For Registered Push Pin MP5's. This Trigger Group Can Also Be Used For Registered Sear...HKP-00448$2,499.95 -
HK MP5 Trigger Housing - FBI 2 Position 0,1 Pictogram - .40 S&W / 10mm - USED
H&K Heckler & Koch
$199.95H&K MP5 40/10 2 Position (0,1 Pictogram) FBI Style Trigger Housing - C/P This 2 position trigger housing (0,1) features FBI pictogram markings and is designed for the HK MP5 40/10 series. It comes clipped and pinned for semi-auto units, ensuring it...HKP-02696$199.95 -
Out Of Stock
HK MP5 Magazine Floorplate - .40 S&W / 10mm
H&K Heckler & Koch
$14.95New HK German MP5/40 Magazine Floor PlateHKP-01269$14.95 -
HK MP5K Bolt Carrier - Full Auto - .40 S&W / 10mm - USA
HKP HK Parts
$149.95HKP MP5K 40/10 Full Auto Bolt Carrier Machined completely from billet ordnance steel. This carrier is made to the latest specs and is Tungsten filled, and heat treated providing the finest American made carrier available. Not to be confused with cheap...HKP-18362$149.95