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 UMP40 Bolt Group - Semi-Auto - 40 S&W - USED
H&K Heckler & Koch
Now: $729.95Was: $949.95Heckler and Koch HK UMP40 Bolt Group - Semi-Auto - 40 S&W - USED ONLY 3 UNITS AVAILABLE - VARYING CONDITION SHOWN - SOLD INDIVIDUALLY Complete factory HK bolt group for semi-automatic UMP firearms chambered in .40 S&W. Intended for replacement,...HKP-99388Now: $729.95Was: $949.95 -
On Sale
HK94 Trigger Group - 0,1 - USED
H&K Heckler & Koch
Now: $579.95Was: $799.95Heckler and Koch HK94 0,1 Trigger Group - USED ONLY 1 UNIT AVAILABLE - AS PICTURED Complete factory HK trigger group for the HK94 platform. This assembly includes the grip and trigger housing. Intended for replacement, reference, or build use on...HKP-99385Now: $579.95Was: $799.95 -
On Sale
HK MP5 Bolt Head with Locking Piece - .40 S&W, 10mm - BLEMISHED
H&K Heckler & Koch
Now: $559.95Was: $749.95Heckler and Koch Bolt Head with Locking Piece for HK MP5 .40 S&W and 10mm - BLEMISHED ONLY 7 UNITS AVAILABLE - CONDITION MAY VARY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED...HKP-99369Now: $559.95Was: $749.95 -
HK UMP Barrel - 9mm - Threaded 1/2x28 RH with 3 Lug - BLEMISHED
OMEGA
$449.95HK UMP9 Barrel - Threaded 1/2x28 - 3-Lug 1 UNIT AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Factory-style barrel for HK UMP9 pattern...HKP-99367$449.95 -
On Sale
HK94 Barrel - Sight Tower - Non-Threaded - LIKE NEW
H&K Heckler & Koch
Now: $499.95Was: $599.95Heckler and Koch HK94 Barrel with Sight Tower - Non-Threaded - LIKE NEW ONLY 1 UNIT AVAILABLE Factory-style barrel designed for HK94 pattern firearms. This non-threaded barrel is suitable for replacement or build use and maintains the correct profile and...HKP-99366Now: $499.95Was: $599.95 -
HK33 Cocking Tube with Hanger - 11" - Right Hand
HKP HK Parts
$149.95HKP HK33 11" Cocking Tube with Hanger - UNFINISHED ONLY 1 UNIT AVAILABLE This right-hand cocking tube with welded hanger is manufactured in the USA for HK33 pattern rifles and is made to match original HK specifications. Designed as a correct...HKP-99365$149.95 -
HK MP5, MP5K Cleaning Brush Rod - 9mm
H&K Heckler & Koch
$294.95HK MP5 Cleaning Brush Rod Factory cleaning rod designed specifically for 9mm MP5 platforms. An essential tool for ensuring optimal function and accuracy. Compatible With: HK MP5, SP5 HK MP5K, SP5K Clones and custom buildsHKP-22494$294.95 -
On Sale
HK USP Compact Lockout Device - Complete
H&K Heckler & Koch
Now: $19.95Was: $24.95HK USP Compact Lockout Device - Complete Easily installs to lock out the magazine. Used to comply with certain state laws and as an added safety feature. This lockout device can be retrofitted to older-style USPC's that do not have the lockout device...HKP-99360Now: $19.95Was: $24.95 -
HK21E, HK23E Rear Sight Elevation Drum
H&K Heckler & Koch
$59.95HK 21E, 23E Rear Sight Elevation Drum Factory HK elevation drum for 21E, 23E, and 13E rear sights. This part is new old stock and no longer in production. Limited quantity available. Compatible With: HK 21E HK 23E HK 13EHKP-99352$59.95 -
HK21E, HK23E Rear Sight Windage Drum
H&K Heckler & Koch
$89.95HK 21E, 23E Rear Sight Windage Drum Factory HK rear sight windage drum. New old stock and out of production. Only a few units available. Compatible With: HK 21E HK 23E HK 13EHKP-99351$89.95 -
HK P30SK Compensator Replacement Rail Set - MOD 1
HKP HK Parts
$28.95HKP HK P30SK MOD 1 Compensator Replacement Rail Set Replacement Picatinny rail and smooth plate inserts with hardware for the MOD 1 compensator. Compatible With: P30SKHKP-22431$28.95 -
On Sale
HK VP9, VP9SK, VP40 Insert Housing with Ejector - USED
H&K Heckler & Koch
Now: $36.11Was: $49.95HK VP9/SK & VP40 Insert Housing w/ Ejector - USED SOLD INDIVIDUALLY USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Insert housing with ejector for HK VP9 & VP40. Compatible With: HK VP9 HK...HKP-16804-USEDNow: $36.11Was: $49.95