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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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 -
On Sale
HK Magazine - .40 S&W 9 Round for HK P2000SK - USED
H&K Heckler & Koch
Now: $39.00Was: $49.00H&K Magazine - .40 S&W 9 Round for HK P2000SK - USED USED. USED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Spare magazines for HK P2000 SK .40 caliber pistols. This...HKP-00307-BNow: $39.00Was: $49.00 -
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 Trigger Housing - Burst 3 Position 0,1,2 - .40 S&W, 10mm - Push Pin - USED - BLEMISHED
H&K Heckler & Koch
Now: $169.95Was: $249.95H&K Heckler and Koch's 3-Position Burst Trigger Housing and Push Pin made for the HK MP5 10mm/.40 S&W - USED - BLEMISHED CONDITION MAY VARY. SEE PHOTOS. Priced for ONE Trigger Housing ONLY - Condition Varies by Unit - Each unit Sold INDIVIDUALLY...HKP-16469-BNow: $169.95Was: $249.95 -
HK MR556 A4 Gas Block- Incomplete
H&K Heckler & Koch
$187.00H&K HK MR556 A4 Gas Block - Incomplete The H&K HK MR556 A4 Gas Block is a high-quality, precision-machined component designed for the MR556 A4 rifle. It houses the gas system that directs gas from the barrel to cycle the action. Compatible...HKP-22087$187.00 -
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
HK MP5 Conversion Kit - CQT FX - Blue - 9mm - 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 -
HK VP9SK Grip Shell - Large - Gray
H&K Heckler & Koch
$16.95H&K VP9SK Large Grip Shell - Gray - Left Factory replacement left grip shell for VP9SK pistols. Compatible With: HK VP9SKHKP-21989$16.95 -
HK MP7 Lock Washer
H&K Heckler & Koch
$4.95H&K MP7 Lock Washer Factory lock washer for the MP7 platform. Specifications: Inside diameter: 4.10mm Outside diameter: 7.75mm Compatible With: HK MP7HKP-21978$4.95 -
On Sale
HK G3 A2 Adjustable Stock Extension - GUNSMITH SPECIAL
USA
Now: $29.95Was: $69.95G3 A2 Adjustable Stock Extension -GUNSMITH SPECIAL MISSING EXTENSION BLOCKS Please Note: Will require work before being functional. HKP recommends the work be performed by a professional gunsmith. The Condition will vary from part-to-part vs. the...HKP-00872-BNow: $29.95Was: $69.95 -
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