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
HK33, HK53, HK93 Complete FBI Trigger Group - Clipped, Pinned
H&K Heckler & Koch
Now: $689.95Was: $849.95Heckler and Koch Complete FBI Trigger Group for HK33, HK53, HK93 - Clipped & Pinned Complete FBI-style trigger group for HK93, HK53, and HK33 pattern rifles chambered in 5.56 / .223. Manufactured from genuine Heckler and Koch German components...HKP-00019Now: $689.95Was: $849.95 -
On Sale
HK91 Handguard - Carbine Length - KeyMod
AIM
Now: $48.95Was: $84.95AIM CARBINE LENGTH KeyMod HANDGUARD for HK91 This sleek streamlined design is an ultra-low-profile handguard with generous mounting space to accept all KeyMod accessories. Compatible With: Carbine length variants only. Specifications: Black...HKP-18178Now: $48.95Was: $84.95 -
HK33K Barrel - 300 BLK - 12.5" - Threaded 5/8x24
RCM
$234.95RCM HK33K .300 BLK K Length Barrel - Threaded 5/8x24 Each barrel is designed for use with popular AAC-Style quick detach muzzle brakes and suppressors featuring a 5/8x24 thread pitch. It is also suitable for most .300 BLK suppressors and applications...HKP-16952$234.95 -
Out Of Stock
HK MP5K Burst Trigger Housing - 3 Position Pictogram S,E,3F - Push Pin - 9mm - RARE
H&K Heckler & Koch
$0.00H&K MP5K 9mm 3 Position (S,E,3F Pictogram) Burst Trigger Housing - Push Pin - RARE This rare HK MP5K SE3F marked ambidextrous push pin trigger features a 3 position pictogram (S,E,3F) Safe, Semi, and 3-Round Burst. With only a few available in the...HKP-02015$0.00 -
HK MP5K Trigger Group - Navy SEF Semi Auto - Clipped and Pinned
H&K Heckler & Koch
$599.95HK Heckler and Koch Navy Style SEF Semi Trigger Group - C/P for HK MP5K HK German manufactured parts. Each unit comes with the professionally converted SEF navy style SEF clipped and pinned housing and semi auto only German HK trigger pack. All trigger...HKP-18055$599.95 -
Out Of Stock
HK MP5K Trigger Housing - 4 Position Pictogram 0,1,3,F - Push Pin - 9mm
H&K Heckler & Koch
$399.95H&K MP5K 9mm 4 Position (0,1,3,F Pictogram) Trigger Housing - Push Pin This new HK German MP5K 4 position trigger housing features the 0,1,3,F pictogram and is designed as a factory push pin style housing. It is not clipped and pinned, suitable for...HKP-02184$399.95 -
HK MP5N Parts Kit - A3 Buttstock and Navy 3 Position Lower - RARE
H&K Heckler & Koch
$2,958.95H&K MP5-N Parts Kit 100% German - A3 Stock & Navy 3 Position Lower - RARE All German HK MP5 Navy parts kit with 3 lug and threaded barrel, Action 3 bolt group, A3 retractable stock, 3 position navy lower, one 30 round curved...HKP-15172$2,958.95 -
HK MP5 Pistol Parts Kit - 9mm - Receiver Flat and Weldment Set
H&K Heckler & Koch
$1,689.95H&K MP5 9mm Pistol Build Kit With Flat & Weldment Set Each MP5 9mm parts kit started life as an iconic German manufactured MP5 that was issued to the border guard and military police for service. During that service, they were carried a ton but...HKP-16606$1,689.95 -
HK MP5 Folding Stock - 3 Position Adjustable
B&T Brugger & Thomet
$389.95B&T Brugger & Thomet 3 Position Adjustable Folding Stock for HK MP5 Swiss made B&T folding and length adjustable stock for the HK MP5. This is a military grade stock as supplied by B&T to military and law enforcement units world-wide...HKP-18100$389.95 -
Out Of Stock
HK416, MR556, AR-15 Pistol Grip - Ambi Safety Compatible
UTG PRO
$14.95UTG PRO AR-15 Pistol Grip with Beaver Tail - Ambi Safety Compatible Made in the USA, the UTG PRO AR-15 Pistol Grip is designed with ergonomic palm swells, a beavertail, and finger grooves for a secure, consistent hold and improved comfort...HKP-99448$14.95 -
Out Of Stock
HK91, G3 Trigger Shoe
H&K Heckler & Koch
$12.95HK G3 Trigger Shoe Factory Heckler and Koch G3 trigger shoe. Compatible With: HK G3 PSG1 MSG90 In-spec. clones and custom buildsHKP-22524$12.95 -
HK MP5, HK94 Rivet for Sling clip - Pack of 3
LSC
$3.95LSC HK MP5, HK94 Rivet for Sling Clip and Case Deflector - Pack of 3 Each sling clip, US or German-made, will require 3 rivets to attach to the receiver or flat. Compatible With: All MP5 and MPK models and variations in all calibers THIS CLOSEOUT...HKP-99400$3.95