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
MLOK LINK Rail Section - 7 Slots - QD
Strike Industries
$25.95Strike Industries M-LOK & Key Mod Universal Rail - 7 Slots Strike Industries LINK attachment system takes the age old question Key-Mod vs. M-LOK and came up with the ultimate solution, a dual...HKP-17594$25.95 -
HK94 Owners Manual - Red
H&K Heckler & Koch
$18.95Heckler and Koch HK94 Owners Manual - Red Original-style HK94 owner’s manual in red. Ideal for HK94 and other HK semi-auto platforms, and a useful reference for basic operation, maintenance, andHKP-00105$18.95 -
Out Of Stock
HK MP5K, SP89, SP5K Stock or Brace Adapter - ACE Style
HKP HK Parts
$54.95ACE Adapter for MP5K, SP89 & SP5K Each ACE adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct "H" buffers to protect your expensive...HKP-18505$54.95 -
On Sale
Ergo 1 1/2" Harris Bipod Slide Mount With Sling Stud
Ergo
Now: $17.96Was: $19.95Ergo 1 1/2" Harris Bipod Slide Mount With Sling Stud The ERGO 1.5" Bipod Slide Mount slides onto 1913 Picatinny rail, allowing shooters to mount a variety of rail accessories, including swivels or...HKP-15737Now: $17.96Was: $19.95 -
On Sale
HK VP9 Gen 1 Rail Mount Compensator
HK HK Parts
Now: $71.21Was: $169.95HK Parts Gen 1 Rail Mount Compensator for HK VP9 with Vented Ports *DO NOT USE COMPENSATOR WITH A THREAD PROTECTOR INSTALLED ON THE BARREL. Doing so will result in damage to your firearm and...HKP-99490Now: $71.21Was: $169.95 -
On Sale
HK G36, G36K, G36C Sling - USED
H&K Heckler & Koch
Now: $35.21Was: $64.95HK G36, G36K, G36C Sling - USED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. 38 mm wide Compatible With:HKP-18459-USEDNow: $35.21Was: $64.95 -
On Sale
HK MP5KSD Barrel - 9mm - 4.89″- Threaded 18x1
RCM
Now: $157.46Was: $174.95HK MP5KSD Barrel - 9mm - 4.89″- Threaded 18x1 The RCM HK Style MP5 SD-K Barrel measures 4.890 inches in length and is constructed from 41v50 cold hammer-forged steel. It features a salt bath nitride...HKP-22493Now: $157.46Was: $174.95 -
On Sale
HK MP5K, AP5-P Housing - Contoured - 0, 1
MKE
$152.96 - $179.95MKE Contoured 0, 1 Housing for HK MP5K and MKE AP5-P This contoured 0, 1 (safe/fire) trigger housing is for HK MP5K-pattern firearms and is manufactured in Turkey.HKP-22468-M$152.96 - $179.95 -
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...HKP-22426-USEDNow: $379.95Was: $479.95 -
Out Of Stock
HK21 FMP Complete Build Kit - Non Matching Numbers - MM Barrel
FMP HK CONTRACT
$4,294.97HK21 Complete Build Kit- Non Matching Numbers HK Parts brings you another exhaustive parts kit. Our HK21 parts kit includes everything you need to resurrect an iconic classic and hit the range for...HKP-22378$4,294.97 -
On Sale
HK VP9SK Competition Magwell
HKP HK Parts
$38.22 - $41.97HKP HK VP9SK Competition Magwell Lightweight VP9SK Magwell with a flared funnel for faster, more reliable reloads. Features: CNC machined from billet aluminumHKP-22336-M$38.22 - $41.97On Sale
HK VP9SK EDC Magwell
HKP HK Parts
$35.67 - $55.95HKP HK VP9SK EDC Magwell Lightweight alloy magwell for quicker mag swaps while maintaining a low-profile. Features: CNC machined from billet aluminumHKP-22330-M$35.67 - $55.95