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
AR-15 Commercial Buffer Tube Kit
HKP HK Parts
Now: $27.95Was: $47.95AR-15 Commercial Buffer Tube Kit Compatible With: All AR-15 style platforms Not correct length for HK rifles Includes: Made with T7 7075 aircraft-grade aluminum Made in the USA with a polished inside tube Mil-Spec triple hard coat...HKP-02736Now: $27.95Was: $47.95 -
On Sale
HK SP5K Trigger Group - Super Safety
War Hammer Armaments
$530.95 - $539.95War Hammer Armaments OEM Polymer SP5K Super Safety Lower Receiver War Hammer Super Safety complete lower for SP5K platforms. Constructed of Kevlar and carbon-fiber–infused polymer, this complete lower is engineered for increased...HKP-22828-M$530.95 - $539.95 -
On Sale
ACR Style Folding Stock - Picatinny Mount - Universal
Global Ordnance
$147.95 - $156.95Global Ordnance UFS 1913 Universal Folding Stock The Global Ordnance UFS 1913 Universal Folding Stock is designed for firearms equipped with a 1913 Picatinny rear rail. Built for versatility and strength, it features an anodized aluminum adapter with a...HKP-22542-M$147.95 - $156.95 -
On Sale
HK MP5, HK94 Rivet for Sling clip - Pack of 3
LSC
Now: $2.95Was: $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-99400Now: $2.95Was: $3.95 -
HK416, MR556 2-Stage Trigger - Full-Auto
H&K Heckler & Koch
$449.95HK416, MR556 2-Stage Trigger - Full-Auto Factory HK 2-stage full-auto HK416 trigger. Compatible with semi-auto HK416's and MR556's. We have a small number of these triggers and HK will not be importing any more units from Germany. Once these...HKP-22423$449.95 -
HK MR762 A4 Gas Block - Complete
H&K Heckler & Koch
$307.95H&K HK MR556 A4 Gas Block - Complete Factory HK MR762 A4 adjustable gas block ideal for switching between suppressed and unsuppressed firing. Compatible With: HK MR762 A4 Features: Genuine H&K factory part Complete gas block...HKP-22422$307.95 -
On Sale
HK MP5, SP5 Handguard - Slimline Style - GUNSMITH SPECIAL
HKP HK Parts
Now: $15.98Was: $27.95MKE AP5/MP5 Slimline Handguard - GUNSMITH SPECIAL HOLES DO NOT ALIGN - NEEDS MODIFICATION THIS PART IS SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Please Note: Will require work before being functional. HKP...HKP-22222-BNow: $15.98Was: $27.95 -
HK USP Magazine - 9mm - 10 Round - Standard Floorplate
H&K Heckler & Koch
$54.95HK USP9 Magazine - 10 Round - Standard Floorplate Factory 10-round magazine for the HK USP9, featuring a standard floorplate. Compatible With: HK USP 9mmHKP-22415$54.95 -
On Sale
HK21 FMP Complete Build Kit - Non Matching Numbers - MM Barrel
FMP HK CONTRACT
Now: $3,864.95Was: $4,294.97HK21 Complete Build Kit- Non Matching Numbers HK Parts brings you another exhaustive parts kit. Our HK21 parts kit includes everything you need to resurrect an iconic classic and hit the range for belt-fed action. We also included our own hanger with a...HKP-22378Now: $3,864.95Was: $4,294.97 -
Out Of Stock
HK VP9, P30 Brass Base Pad
Grayguns
$28.00Grayguns Brass Base Pads are perfect for competitors looking to add weight to their pistol. Compared to our 6061 Aluminum pads, the Brass Base Pads are significantly heavier. Weight Comparison – VP9 & P30 Brass (VP9/P30) – 28.4...HKP-22345$28.00 -
On Sale
HK G36 ACR Folding Stock - Picatinny Adapter
HKP HK Parts
Now: $323.95Was: $359.95HK G36 ACR Folding Stock w/Picatinny Adapter Add the iconic look and renowned functionality of the ACR stock to your G36 with our adapter and stock combo. The universal Picatinny adapter allows the user to swap the F5 ACR stock to other firearms and...HKP-22331Now: $323.95Was: $359.95 -
On Sale
HK P30 Magwell - Ultra Low Profile
HKP HK Parts
Now: $47.95Was: $59.95HKP HK Parts Tactical Low Profile Magwell for HK P30 The smallest, lowest profile magwell available for the HK P30, now with a fully functional funnel for quicker, smoother reloads. Precision-machined from durable aluminum, it enhances performance...HKP-22165-MNow: $47.95Was: $59.95