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 Parts Kit - Reverse Stretch Pistol - 9mm
HKP HK Parts
Now: $1,343.95Was: $1,679.95MP5 Reverse Stretch 9mm Pistol Build Kit Complete - German & USA Made Parts MP5-RS 9mm parts kit complete with all the parts needed for an MP5 semi-auto pistol. Each kit comes with all 6 of the needed US made compliance parts to be legal as a pistol,...HKP-17121Now: $1,343.95Was: $1,679.95 -
On Sale
HK MP5, MP5K Optic Mount, Trijicon 1X24 Reflex
B&T Brugger & Thomet
Now: $114.95Was: $127.95B&T Brugger and Thomet Mount for Trijicon 1X24 Reflex for your HK MP5 and HK MP5K Low profile mount for HK MP5 with Trijicon RX01m 1x24 Specifications: Color: Black Width max: 42.5 mm Length max: 125.5 mm Height max: 25.8 mm Material: Aluminum,...HKP-16863Now: $114.95Was: $127.95 -
Out Of Stock
HK MP5, HK33, HK53, HK93 Grip Housing - 4 Position Pictogram 0,1,3,F - Push Pin - 9mm, 5.56 / .223
H&K Heckler & Koch
$349.95H&K MP5 & 93/53/33 (9mm, 5.56/.223) 4 Position (0,1,3,F Pictogram) Grip Housing - Push Pin This HK German grip housing is designed for push pin type receivers. This housing is not clipped & pinned, coming exactly as it was manufactured by...HKP-02240$349.95 -
HK VP9CC Magazine - 10 Round
H&K Heckler & Koch
$58.95Heckler and Koch VP9CC Magazine 10 Round Factory HK VP9CC 10-round magazine. Compatible With: VP9CCHKP-22568$58.95 -
On Sale
HK MP5, AP5 Magazine Catch Push Button
MKE
Now: $4.95Was: $6.95HK MP5, AP5 Magazine Catch Button Push button for magazine catchCompatible with: HK MP5, SP5 HK MP5K, SP5K HK SP89 HK94 HK33, HK53, HK93 HK91, G3 In-spec. clones and custom buildsHKP-22548Now: $4.95Was: $6.95 -
On Sale
HK USPC, HK45, HK45C Magazine Follower
HKP HK Parts
Now: $3.95Was: $5.95HKP HK Parts Magazine Follower for HK USPC, HK45, and HK45C A great U.S.-made spare to have on hand, as the follower is a wear-and-replacement part. Do not forget to order spare magazine springs while you are at it. Compatible With: USPC45 USPC45...HKP-22500-MNow: $3.95Was: $5.95 -
Out Of Stock
Surefire M900V LED Weapon Light with Vertical Grip - Used
Surefire
$199.95Picatinny Mounted VFG Weapon Light - White and IR Output A rugged, dual-output vertical foregrip light engineered for professional applications. This Vampire-series unit delivers powerful white-light illumination, infrared capability, and intuitive...HKP-99347$199.95 -
HK MP5, MP5K Folding Stock or Brace - HDA3
Haga Defense
$349.95HDA3 Stock and Brace for MP5K, SP5K The HDA3 is a modular, USA-made stock and brace system developed by Haga Defense and A3 Industries. Built for strength, adaptability, and cross-platform compatibility, it delivers premium rigidity, smooth...HKP-22355-M$349.95 -
On Sale
HK91, G3 Backplate Assembly - Surplus
FMP HK CONTRACT
Now: $11.95Was: $14.95FMP HK91, G3 Backplate Assembly - Used/Surplus G3 surplus backplate assembly manufactured by FMP on HK tooling. Compatible With: HK G3, HK91HKP-22374Now: $11.95Was: $14.95 -
On Sale
HK MP5K Ultra Carbine Stock and Adapter
HKP HK Parts / Magpul
Now: $280.95Was: $312.95HK MP5K Magpul UCS Stock with Adapter The HK Parts UCS adapter and stock for the MP5K pairs our proven stock adapter with Magpul's UCS stock for a compact, adjustable configuration. The UCS stock features a reversible hinge for left and right folding...HKP-22198Now: $280.95Was: $312.95 -
On Sale
HK CC9 Extended Base Plate
HKP HK Parts
Now: $35.95Was: $44.95HKP CC9 Extended Base Plate This +0 base plate gives your CC9 magazine the extended look and enhanced grip of a full-capacity mag without adding any rounds. Perfect for restrictive states or anyone wanting a streamlined, tactical appearance while staying...HKP-22167-MNow: $35.95Was: $44.95 -
On Sale
HK CC9 Holster - Comp Carry - LH
Comp-Tac
Now: $50.95Was: $59.95Comp-Tac HK CC9 Comp Carry Holster - Left Hand Designed for the HK CC9 with the HK Parts MOD 1 compensator, this holster offers a secure fit, smooth draw, and adjustable cant and ride height for optimal comfort and performance during concealed or...HKP-22097Now: $50.95Was: $59.95