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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HK21 FMP Ultimate Build Kit - Matching Numbers - Complete MM Barrel
FMP HK CONTRACT
$4,148.95HK21 Ultimate Build Kit- Matching Numbers with Michael's Machines Complete Barrel HK Parts brings you another exhaustive parts kit. Our numbers-matching Ultimate HK21 parts kit includes everything you need to resurrect an iconic classic and hit the...HKP-22538$4,148.95 -
On Sale
HK SL8 to G36 Conversion Kit - Incomplete - BLEMISHED
Special Weapons
Now: $139.95Was: $319.95HK SL8 to G36 Conversion Kit - Incomplete - BLEMISHED VARYING CONDITION SHOWN - SOLD INVDIVIDUALLY DOES NOT INCLUDE STOCK OR AR-STYLE MAGAZINE ADAPTER. Will REQUIRE ADDITIONAL MACHINING TO THE STOCK: HINGE, BUTTON LOCKING SECTION, AND INDEX PLATE HOLE...HKP-99394Now: $139.95Was: $319.95 -
HK MP5, MP5K, MKE AP5, AP5-P Case Deflector - 9mm Receivers
MKE
$24.95MKE AP5, AP5-P, HK MP5, MP5K Case Deflector for 9mm Receivers This steel case deflector is manufactured by MKE for AP5 firearms and fits MP5-pattern 9mm receivers. It installs on the ejection-port flat of the receiver and is riveted or welded in place to...HKP-99349$24.95 -
Woody Stock - Walnut - Picatinny Mount
WOOX
$228.95 - $298.95WOOX Woody Stock - Walnut The WOOX Woody Stock is a premium upgrade for rifles and SMGs featuring a Picatinny stock interface. Crafted from solid American walnut, it delivers classic warmth with modern ergonomics; featuring an adjustable cheek riser, QD...HKP-22461-M$228.95 - $298.95 -
HK MP5, SP5 3-Lug Faux Suppressor - Early MP5SD Style
MFI
$167.95HK MP5, SP5 3-Lug Faux Suppressor - Early classic SD Style MFI replicates the classic appearance of an early MP5SD suppressor. This new design enhances the authenticity of your build for those who aim to replicate a specific era. It is designed to fit...HKP-22439$167.95 -
HK416, MR556 2-Stage Trigger - Full-Auto
H&K Heckler & Koch
$449.95HK416, MR556 2-Stage Trigger - Full-Auto Factory HK 2-stage full-auto HK416 trigger. Compatible with semi-auto HK416's and MR556's. We have a small number of these triggers and HK will not be importing any more units from Germany. Once these...HKP-22423$449.95 -
On Sale
HK P2000 Backstrap with Safety - Medium - Black - USED
H&K Heckler & Koch
Now: $19.95Was: $44.95HK P2000 Backstrap w/ Safety - Medium - Black - USED SOLD INDIVIDUALLY USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Compatible With: HK P2000 Note: This will not fit the SK models but will fit...HKP-01566-USEDNow: $19.95Was: $44.95 -
HK91, G3 JMK PRS Hybrid Stock - Walnut
JMK
$387.95HK91, G3 JMK PRS Hybrid Stock - Walnut The JMK HK91 PRS hybrid wood stock comes fully assembled and ready for a quick and easy install. This custom hybrid stock is based on the Magpul PRS Lite design, with an old-school wood-stock look. The walnut part...HKP-22409$387.95 -
HK G3, HK417, HK33, HK53, HK93 Flash Hider - 5/8x24 - Plan B Taper Mount
JMAC Customs
$116.955/8x24 - Plan B Taper Mount Flash Hider for HK G3, HK417, HK33, HK53, HK93 The 360HD is the latest evolution in JMac Custom's Recoil Reduction Device (RRD) family of muzzle brakes, designed to meet the needs of serious shooters...HKP-22412$116.95 -
On Sale
HK416 A5 Bolt Carrier
H&K Heckler & Koch
Now: $1,549.95Was: $1,997.95H&K HK416 A5 Bolt Carrier Factory HK416 A5 full auto bolt carrier. This carrier is backwards compatible with earlier HK416 A1 and A3 variants. Features the updated captive firing pin retaining system. Compatible With: HK416 A5 HK416 A1 HK416...HKP-22328Now: $1,549.95Was: $1,997.95 -
HK MP5 Trigger Group - AC Unity Grip - Match Trigger
HKP HK Parts
$644.85HKP HK MP5 Trigger Group with AC Unity Grip & Match Trigger The MP5 match trigger group combined with the AC Unity grip is a great choice for anyone seeking a tactical and aesthetically pleasing build. Featuring a robust metal housing and a top-tier...HKP-22250$644.85 -
On Sale
HK93, HK53, AP53 Binary Trigger Group- 3 Position Navy Engraved
H&K Hechler & Koch / FA Franklin Armory
$899.95 - $989.95Franklin Armory/H&K 53/93 & AP53 Binary Trigger Group- 3 Position Navy Engraved US-made binary trigger group installed in a German Navy-style polymer housing. Features a 3-position selector with 0,1,F pictogram markings. All three positions align...HKP-22170-M$899.95 - $989.95