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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HK45 MOD 1 Threaded Barrel Compensator
HKP HK Parts
$179.95HK Parts MOD 1 Compensator for Threaded Barrel: HK45 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, getting you back on target quicker. Each MOD 1...HKP-21658$179.95 -
Out Of Stock
HK416, MR556 Cleaning Kit - Green Pouch
H&K Heckler & Koch
$64.95H&K HK 416/MR556 Cleaning Kit with Green Pouch This is a genuine HK factory cleaning kit. Includes: Nylon storage bag, olive green Nylon brush Cleaning rod, 6 parts Barrel brush Chamber brush Oil brush Oil bottle, empty Cleaning wipes, 50 ea...HKP-21623$64.95 -
HK416, MR556, HK417, MR762 Pistol Grip - K2 XL
Magpul
$22.95Magpul Moe K2 XL AR Grip Designed for shooters with larger hands, the K2-XL Grip is similar to the MOE-K2 Grip – AR15/M4 but nearly 25% bigger. A drop-in upgrade for the AR15/M4, it offers a more vertical grip angle thereby improving comfort...HKP-21554$22.95 -
HK G3 Incomplete Backplate - Painted
H&K Heckler & Koch
$29.95HK G3 Incomplete Backplate - Factory German G3 refinished backplate. A great replacement or spare to have around to replace your broken or worn out backplates. Please note you will need two rivets, nylon ring, recoil spring in order to...HKP-21541$29.95 -
Out Of Stock
HK417, G28 Patrol Handguard - RAL8000
H&K Heckler & Koch
$987.95H&K HK 417/G28 Patrol Handguard - RAL 8000 Anodized Genuine HK 417/G28/MR762 patrol handguard anodized in RAL 8000. Compatible With: HK 417 HK MR762 G28HKP-21516$987.95 -
HK MP5 Alpha Folding Stock With Direct Fit Adapter
MI Midwest Industries
$419.95MI/HKP HK MP5 Alpha Folding Brace/Stock Adapter The Midwest Industries Alpha folding stock paired with the HK Parts Picatinny rail adapter offers unparalleled versatility. Adjust your length of pull, cheek riser, and butt pad to your exact style of...HKP-21512-M$419.95 -
HK SP5 Stock With Direct Fit Adapter
Magpul
$189.95HK SP5 Stock With Direct Fit Adapter SP5 DT Magpul stock ready to drop in on any in-spec SP5 receiver or clone. We take our AR SP5 Adapter and attach it onto a mil-spec buffer tube. We then drop it on to the new Magpul DT Carbine stock. This is a great...HKP-21411-M$189.95 -
HK VP9, P30 +15 Magazine Extension Kit - Black
HKP HK Parts
$74.95Magazine Extension Kit +15 – Black - HK VP9, HK P30 HK Parts magazine extension +15 kit adds 15 additional rounds to the HK VP9/P30 magazine with the simple swap of the floor plate & high-reliability mag spring. HKP highly recommends...HKP-21340$74.95 -
On Sale
HK VP9 Railok™ Threaded Barrel Compensator - BLEMISHED
HKP HK Parts
Now: $99.95Was: $189.95HKP HK VP9 Railok™ Threaded Barrel Compensator - BLEMISHED CONDITION MAY VARY. SEE PHOTOS. SOLD INDIVIDUALLY. THIS COSMETICALLY BLEMISHED ITEM IS FULLY FUNCTIONAL. THIS ITEM IS SOLD AS IS AND NOT ELIGIBLE FOR A RETURN. The HK Parts Railok™...HKP-21163-BNow: $99.95Was: $189.95 -
On Sale
JMAC G36K/HK33 Compensator (KeyMicro) - Threaded 15x1
JMAC Customs
Now: $86.95Was: $109.95JMAC G36K/HK33 (5.56/.223) Compensator (KeyMicro) - Threaded 15x1 In order to use this device with a suppressor, it must be installed by a professional to ensure it is properly mounted and aligned. Do NOT shoot without checking alignment with bore rods...HKP-21257Now: $86.95Was: $109.95 -
Out Of Stock
HK PSG-1 Barrel - 7.62 / .308 - 25.5"
RCM
$849.95RCM Schneider PSG-1 Barrel Only the finest blanks in the industry can produce the best results on the range. Schneider Barrel Company makes that blank. This barrel will work perfectly with standard G3/91 trunnions, G3 barrel extensions, or...HKP-21193$849.95 -
HK MP5, SP5 Binary Trigger Group - Ambi - BFSIII - 9mm
FA Franklin Armory
$1,899.95Franklin Armory HK MP5 - BFSIII HK-C1 – Binary Trigger Group – Ambi 3 Position Housing 3 Position – pictogram – HK binary trigger group Binary triggers count as 4 922r compliant components. The components that count towards 922r...HKP-19182-M$1,899.95