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
HK UMP, USC Bolt Carrier - Semi Auto - .45 ACP - BLEMISHED
USA
Now: $239.95Was: $399.95USA HK UMP/USC .45 Semi Auto Bolt Carrier - Complete - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED CRACK ON REAR TAB COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE...HKP-18588-BNow: $239.95Was: $399.95 -
HK93, HK53, AP53 Binary Trigger Group- SEF Contoured
H&K Hechler & Koch / FA Franklin Armory
$1,399.95 - $1,449.95Franklin Armory/H&K 53/93 & AP53 Binary Trigger Group- SEF Contoured US-made binary trigger group installed in a German SEF contoured trigger housing. Features a 3-position selector marked SEF. All three positions align with binary selector...HKP-22169-M$1,399.95 - $1,449.95 -
HK93, HK53, AP53 Binary Trigger Group - 3 Position 2 Round Burst Engraved
H&K Hechler & Koch / FA Franklin Armory
$1,399.95 - $1,449.95Franklin Armory/H&K 53/93 & AP53 Binary Trigger Group- 3 Position 2 Round Burst Engraved US-manufactured binary trigger pack installed in a German SEF-style polymer housing engraved with 0, 1, 2 pictogram markings. All three positions align with...HKP-22168-M$1,399.95 - $1,449.95 -
HK CC9 Barrel - 9mm - 3.32" - Standard
H&K Heckler & Koch
$174.95H&K CC9 Standard Barrel Made by H&K, this standard barrel for the H&K CC9 pistol provides precise chambering and consistent accuracy. Compatible With: HK CC9HKP-22127$174.95 -
HK91, G3 Caliber Conversion Kit - .22LR
H&K Heckler & Koch
$1,895.95Heckler and Koch HK G3, HK91 .22LR Caliber Conversion Kit - LIKE NEW SOLD AS IS. NO RETURNS. Convert any HK91 or HK G3 rifle to cycle .22LR ammunition with this genuine HK caliber conversion kit. This kit is intended for marksmanship training and...HKP-22093$1,895.95 -
On Sale
HK MP5 Barrel - 10mm / .40 S&W - Bulged - BLEMISHED
H&K Heckler & Koch
Now: $189.95Was: $579.95Heckler and Koch MP5 40/10 German Bulged Barrel - BLEMISHED MP5 40/10 BULGED barrel. Can be cut down and repurposed for a custom barrel length application. Compatible With: HK MP5 10mm / .40 S&W THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN,...HKP-99174Now: $189.95Was: $579.95 -
Out Of Stock
HK P7 PSP 9mm Slide
H&K Heckler & Koch
$1,589.95H&K P7 PSP 9mm Slide Factory German slide for the HK P7 PSP chambered in 9mm. These slides have been out of production for a very long time but we discovered one last unit in our inventory. The pictured slide is the actual part that will ship...HKP-99168$1,589.95 -
On Sale
CQT FX Simunition Conversion Kit for MP5 - 9mm Blue - Spare Part Lot - BLEMISHED
Simunition
Now: $87.95Was: $319.95CQT FX Simunition Conversion Kit for MP5 - 9mm Blue - Spare Part Lot - BLEMISHED SHADES OF BLUE MAY VARY The CQT FX Simunition conversion spare parts lot from original kits. Everything pictured is included. THIS CLOSEOUT PART IS NOT...HKP-99054-BNow: $87.95Was: $319.95 -
On Sale
HK417, MR762 Bolt Head - Complete - E1
H&K Heckler & Koch
Now: $536.95Was: $595.95Heckler and Koch 417 E1 Bolt Head - Complete Rare factory bolt head for the HK417. Compatible With: HK MR762 HK417HKP-22037Now: $536.95Was: $595.95 -
Out Of Stock
HK416 Convex Buttstock - Wrench Included
H&K Heckler & Koch
$97.95H&K HK416 Convex Buttstock w/Wrench Factory-original H&K buttstock with convex buttpad and included tool. Compatible with HK416 rifles using MIL-SPEC buffer tubes (not included). Features: Ergonomic cheek weld Twist-off rubber buttpad with two...HKP-22025$97.95 -
Out Of Stock
HK USP Compact .45 ACP Stripped Slide
H&K Heckler & Koch
$436.95H&K USP45C Stripped Slide Factory original H&K USP45 Compact slide, stripped and ready for a custom build or replacement. Machined from high-grade steel and finished in durable black oxide. Ideal for gunsmiths, enthusiasts, or those looking to...HKP-22026$436.95 -
HK21, HK21E, HK23, HK23E Double Frame Front Sight Base
H&K Heckler & Koch
$66.95H&K 21/21E/23/23E Double Frame Front Sight Base Original, unissued German double frame front sight bases. These have never been welded to a cocking tube and are perfect for completing or restoring your build with factory-spec parts. Compatible...HKP-21908$66.95