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 interface design compatible with both M-LOK and Key-Mod,...HKP-17594$25.95 -
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 firearm. This is the finest ACE adapter...HKP-18505$54.95 -
HK MP5, AP5 Firing Pin Spring
MKE
$4.88HK MP5, AP5 Firing Pin Spring The MKE firing pin spring is compatible with all MP5, AP5, AP5-P, MP5K, and .40/10 variants, as well as most in-spec clones. The firing pin is one of the most frequently replaced repair items, making this spring an essential...HKP-22485$4.88 -
HK UMP Apparel - Hats, Patches, and Shirts
HKP HK Parts
$0.00HKP HK UMP Apparel and Patch Collection Represent your platform with the HK Parts UMP Series apparel and accessories lineup. Built for enthusiasts who appreciate iconic firearms and clean, understated design, this collection delivers premium...HKP-22459-M$0.00 -
HK G36C Apparel - Hats, Patches, and Shirts
HKP HK Parts
$0.00HKP HK G36C Apparel and Patch Collection Represent your platform with the HK Parts G36C Series apparel and accessories lineup. Built for enthusiasts who appreciate iconic firearms and clean, understated design, this collection delivers premium...HKP-22456-M$0.00 -
On Sale
HK21 FMP Complete Build Kit - Non Matching Numbers - MM Barrel
FMP HK CONTRACT
Now: $3,849.95Was: $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 belt-fed action. We also included our own hanger with a...HKP-22378Now: $3,849.95Was: $4,294.97 -
On Sale
CZ Scorpion Binary Trigger - Curved - BFSIII - BLEMISHED
FA Franklin Armory
Now: $349.99Was: $495.95Franklin Armory CZ Scorpion - BFSIII - Binary Trigger - Curved - BLEMISHED DAMAGED PACKAGING - PRODUCT UNAFFECTED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL...HKP-18881-BNow: $349.99Was: $495.95 -
ACR Folding Stock - Telescopic 7 Position - Picatinny Rail
F5 MFG
$249.95F5 ACR Folding Stock - Picatinny Mount - Universal The F5 ACR folding stock easily attached to any Picatinny rail, giving the user the versatility of swapping between any Picatinny equipped firearm. Features: 7-position...HKP-22280-M$249.95 -
HK MP5 Optic Mount - .22LR - Raised - Aimpoint ACRO
HKP HK Parts
$119.95HKP HK MP5 .22LR Aimpoint ACRO Sight Mount - Raised Height MP5 .22LR raised height mount for the Aimpoint ACRO mounting interface. Our ACRO mounts provide an unobstructed view of the factory HK sights through the mount giving the shooter the best of both...HKP-22248-M$119.95 -
HK G36 Magazine - 30 Round - LEO Marked - USED
H&K Heckler & Koch
$195.99H&K G36 (5.56/.223) 30 Round Magazine - LEO Marked - USED CONDITION VARIES BY UNIT - SOLD INDIVIDUALLY HK German 30-round magazine, LEO marked, designed to perfectly fit all G36, G36K, G36C variants, and converted SL8's with the G36 magwell...HKP-22212$195.99 -
On Sale
Picatinny Riser Mount - Super Slim - 4 Slots - BLEMISHED
Other
Now: $26.21Was: $49.95Super Slim Picatinny Riser Mount - 4 Slots - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The slim Picatinny riser mount is offered in two clamp...HKP-99229-MNow: $26.21Was: $49.95 -
HK CC9 Extractor
H&K Heckler & Koch
$19.95H&K CC9 Extractor Replacement extractor for the CC9 pistol. Removes spent casings and functions as a visual and tactile loaded chamber indicator. Compatible With: HK CC9HKP-22129$19.95