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 MP5, AP5 Cocking Handle - BLEMISHED
MKE
Now: $7.46Was: $17.95MKE AP5, HK MP5 Cocking Handle - BLEMISHED MARKINGS ONHKP-99374Now: $7.46Was: $17.95 -
HK G3 Rear Receiver Section with Rear Sight - Complete - Parkerized - SURPLUS
H&K Heckler & Koch
$54.95H&K G3 Complete Parkerized Rear Receiver Section w/ Rear Sight - SURPLUS UNIT QUALITY MAY VARY - SEE PHOTOS FOR EXAMPLE OF CONDITION RANGE Sold IndividuallyHKP-22164$54.95 -
Out Of Stock
HK416 Folding Front Sight - Complete
H&K Heckler & Koch
$187.95H&K 416 Folding Front Sight - Complete Factory H&K folding front sight for the HK416 with a 33mm sighting line. Compatible WithHKP-22022$187.95 -
HK416A5, MR556 Barrel - 5.56 / .223 - 11"
H&K Heckler & Koch
$424.95Heckler and Koch 11" Barrel for HK416A5, MR556 A4, MR556 A5 Factory German 11" HK416A5, MR556 barrel. Cold hammer-forged and built to HK’s standard for durability, accuracy, and service life. The 1:7...HKP-21932$424.95 -
On Sale
HK91, G3 Tactical Handguard - Low Profile
PTR
$70.09 - $109.95PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile Made from aircraft-grade aluminum, rock-solid, and lightweight. This forearm allows you to add up to 3 rails on your firearm. That includes...HKP-21806-M$70.09 - $109.95 -
HK P30L Conversion Barrel - .40 S&W to 9mm - Threaded 1/2x28
RCM
$214.95RCM HK P30L .40 to 9mm Conversion Barrel - Threaded - 1/2x28HKP-21785$214.95 -
TP9, MP9, APC9, SPC9, GHM9, KH9 Magazine Loader - 9mm
B&T Brugger & Thomet
$40.00B&T Magazine Loader - 9mm B&T's factory 9mm magazine loader is compatibly ONLY with B&T factory 9mm magazines. Compatible With: B&T TP9HKP-21716$40.00 -
Gideon Shadow UMP Rear Sight, Complete
OMEGA
$39.95Omega Rear Sight Complete for HK UMP All the parts needed for the rear sight on a Gideon Shadow UMP style build. New USA made parts for your build. Will only work with Gideon Shadow. Locking screw...HKP-21266$39.95 -
On Sale
HK UMP Hammer Spring - Left
USA
Now: $6.34Was: $9.95USA HK UMP Left Hammer Spring New U.S hammer spring- left side A high wear item that needs to be changed when light firing pin strikes develop on your USC or UMP firearm. Compatible With: HK UMP...HKP-20840Now: $6.34Was: $9.95 -
HK VP9, P30, HK45 Sight Set - Day and Night - Self Illuminated - Green
Meprolight
$119.95Meprolight HK45/HK45C, P30, VP9 Hyper-Bright Self Illuminated Day/Night Sight Set - Green Mepro Hyper-Bright fixed pistol sights feature an extremely bright contrasting colored ring front sight. The...HKP-19940$119.95 -
HK MP5K Pistol Stabilizing Brace - SBA4 - Adapter Included
SB Tactical
$294.95SB Tactical HK MP5K SBA4 Pistol Stabilizing Brace & Adapter Designed for all platforms capable of accepting a mil-spec carbine receiver extension, the SBA4 is 5-position adjustable and features an...HKP-19930$294.95 -
HK VP9, VP9SK, HK VP40 Catch
H&K Heckler & Koch
$27.95HK Catch VP9, VP9SK & VP40 Compatible With: HK VP9, VP9 Tactical HK VP9A1 FHKP-16799$27.95