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
HK416, MR556 Barrel Flute Cleaning Brush - 5.56 / .223
HKP HK Parts
Now: $15.91Was: $24.95HK MR556, HK416 Cleaning Brush - Barrel Flute - 5.56 / .223 This brush is a must-have for cleaning the chamber flutes on a MR556 or HK416 firearm. If the flutes become clogged or dirty, the firearm...HKP-22316Now: $15.91Was: $24.95 -
HK45C MOD 1 Compensator
HKP HK Parts
$179.95HK Parts MOD 1 Compensator: H&K HK45C 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...HKP-22278$179.95 -
On Sale
HK G36 Magazine - 30 Round - LEO Marked - USED - BLEMISHED
H&K Heckler & Koch
Now: $89.96Was: $195.99H&K G36 (5.56/.223) 30 Round Magazine - LEO Marked - USED - BLEMISHED BROKEN COUPLERS AND LUGS - VARYING CONDITION SHOWN - SOLD INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL ANDHKP-22212-BNow: $89.96Was: $195.99 -
HK CC9 Extractor Buffer
H&K Heckler & Koch
$5.95H&K CC9 Extractor Buffer Made in Germany by H&K, the extractor buffer for the CC9 cushions extractor movement and reduces wear during cycling.HKP-22131$5.95 -
HK VP9 #6 Acro Adapter Plate
H&K Heckler & Koch
$56.99H&K VP9OR #6 Acro Adapter Plate Optic plate #6 for ACRO optic. Compatible with:HKP-22001$56.99 -
Out Of Stock
HK416 A5, MR556 A4 Barrel - 5.56 / .223 - 16.5"
H&K Heckler & Koch
$389.95H&K HK MR556 A4/A5 16.5" Barrel This 16.5" factory H&K MR556 A4 barrel is cold hammer-forged from high-quality steel for exceptional durability, accuracy, and longevity. Manufactured to Heckler &...HKP-21931$389.95 -
On Sale
HK MP5 Dual Folding Stock with Adapter - .22LR
HKP HK Parts / Strike Industries
$203.97 - $319.95Strike Industries HK MP5 .22LR Dual Folding Stock with Adapter The Strike Industries Dual Folding Stock paired with the HKP MP5 .22LR picatinny adapter is one of the best options on the market for...HKP-21769-M$203.97 - $319.95 -
On Sale
HK MP5 Receiver Flat - 9mm - no Sling Clip
HKP HK Parts
Now: $121.09Was: $189.95HKP HK MP5 9mm Receiver Flat w/o Sling Clip The MP5 9mm receiver flat serves as the foundation for custom MP5 builds. This version does not include a sling clip cutout, offering flexibility for...HKP-21828Now: $121.09Was: $189.95 -
HK21 Cocking Lever Support
H&K Heckler & Koch
$83.95H&K HK21 Cocking Lever Support Authentic HK production cocking lever support for the HK21/A1. This NOS part hails directly from Germany, ensuring the quality and precision of original HK components...HKP-21821$83.95 -
On Sale
HK P30L Conversion Barrel - .40 S&W to 9mm - Threaded - 13.5x1
RCM
Now: $193.46Was: $214.95RCM HK P30L .40 to 9mm Conversion Barrel - Threaded - 13.5x1HKP-21788Now: $193.46Was: $214.95 -
Out Of Stock
HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28 - A5
Nefarious Arms
$594.95Nefarious Arms HK 416/MR556 14.5" A5 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting. Grab this expertly crafted barrel for your next SBR or...HKP-21590$594.95 -
On Sale
HK P2000SK Compensator for Threaded Barrel
HKP HK Parts
Now: $101.21Was: $189.95HKP HK P2000SK Compensator for Threaded Barrel The HK Parts P2000SK compensator will add a sleek and tactical look to your P2000SK. With the quick and easy addition of our compensator you will add...HKP-20884Now: $101.21Was: $189.95