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 Barrel - 9mm - Threaded 1/2x28 RH with 3 Lug - BLEMISHED
OMEGA
Now: $259.46Was: $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 BLHKP-99367Now: $259.46Was: $449.95 -
On Sale
HK94 Barrel - Sight Tower - Non-Threaded - LIKE NEW
H&K Heckler & Koch
Now: $374.96Was: $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...HKP-99366Now: $374.96Was: $599.95 -
On Sale
HK USP Compact Lockout Device - Complete
H&K Heckler & Koch
Now: $14.96Was: $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...HKP-99360Now: $14.96Was: $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...HKP-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 21EHKP-99351$89.95 -
On Sale
HK P30SK Compensator Replacement Rail Set - MOD 1
HKP HK Parts
Now: $18.46Was: $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-22431Now: $18.46Was: $28.95 -
On Sale
HK VP9, VP9SK, VP40 Insert Housing with Ejector - USED
H&K Heckler & Koch
Now: $27.08Was: $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 SAHKP-16804-USEDNow: $27.08Was: $49.95 -
On Sale
HK USP .45 Compensator Replacement Rail Set - MOD 1
HKP HK Parts
Now: $18.46Was: $28.95HKP HK Parts HK USP .45 ACP Rail and Plate Insert - Replacement MOD 1 Insert Kit Replacement Picatinny rail and smooth plate inserts with hardware for the MOD 1 compensator. Compatible With:HKP-22371Now: $18.46Was: $28.95 -
On Sale
HK417, MR762 Upper Receiver and Handguard - Flecktarn
H&K Heckler & Koch
Now: $1,340.95Was: $1,489.95HK417, MR762 Upper Receiver and 13.5" Handguard - Flecktarn Factory HK MR762 matching flecktarn upper receiver and 13.5" handguard. ONLY 3 SETS AVAILABLE AND WILL NOT BE RESTOCKEDHKP-99325Now: $1,340.95Was: $1,489.95 -
On Sale
HK21E, HK11A1, HK11E Barrel - 7.62 / .308 - 17.7" - Threaded 15x1
Michaels Machines
Now: $785.21Was: $1,168.95MM HK21E, HK11A1, HK11E Barrel - 17.7" Michael's Machines HK21E barrels are crafted in the US from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Barrels come stripped,...HKP-22333Now: $785.21Was: $1,168.95 -
On Sale
FN-FNS .40 S&W Pistol Magazine - BLEMISHED
FN
Now: $37.46Was: $79.95FN-FNS .40 S&W Pistol Magazine - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED MAGAZINE ONLYHKP-19741-BNow: $37.46Was: $79.95 -
HK MP5K, AP5-P Recoil Guide Rod - 9mm
MKE
$24.95MKE HK MP5K 9mm Recoil Guide Rod Incomplete recoil spring guide rod. Compatible With: MP5K MKE AP5-PHKP-22237$24.95