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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HK33, HK53, HK93 Trigger Pack - 4 U.S. 922r Parts
HKP HK Parts
$299.95Semi Auto Trigger Pack HK93,33 & Z43 Models - 4 US 922R Parts HK 93,33,53 & Zenith Z-43 Semi Auto Trigger Pack Complete. Each trigger group incorporates the following US made compliant parts completely assembled & ready to drop in. The...HKP-18003$299.95 -
Out Of Stock
HK MP5, HK90 Series Night Sight System - Front and Rear
XS Sights
$153.99XS Front & Rear Night Sight System - HK Compatible With: HK MP5, 94 HK MP5K, SP89 HK 90 series or Clones HK 91, G3, PTR HK 93, 33, 53 HK MP5 40/10 HK21 HK 416 Other HK 90 series custom builds that use the diopter-style sights.HKP-00883$153.99 -
HK MP5 to AR Stock and Adapter
HKP HK Parts
$229.95HKP MP5 to AR Adapter & Stock Complete Each AR stock, brace adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct H buffers to protect your expensive firearm. This is the finest AR stock...HKP-17119$229.95 -
Out Of Stock
HK MP5 Trigger Housing - Navy 3 Position 0,1,F Pictogram - Push Pin
H&K Heckler & Koch
$324.95Heckler and Koch 3 Position 0,1,F Pictogram Navy Housing - Push Pin for HK MP5 This H&K grip housing is designed for MP5 models with push pin type receivers. Featuring the iconic Navy housing and 3 position pictogram 0,1,F, this housing provides...HKP-16065$324.95 -
HK416, MR556 ARC-Fire Trigger - V2 with 416 Selectors - 2, 3, 6 Round Options
AS Designs / ST Inc
$279.95AS Design HK416, MR556 V2 ARC-Fire Trigger with 416 Selectors, 0-90-180 and 0-45-90 Position Options, and 2, 3, and 6 Round Options AS Designs' ARC-Fire (Active Reset Clutch) trigger is an innovative take on forced reset triggers. The trigger is...HKP-22707-M$279.95 -
B&T APC9 Telescopic Stock Screw – M3x8mm
B&T Brugger & Thomet
$1.67B&T APC9 Telescopic Stock Screw – M3x8mm – Factory Swiss Replacement SOLD INDIVIDUALLY Factory Swiss B&T M3x8mm machine screw used in the APC9 telescopic stock assembly. This metric fastener secures key telescopic stock components...HKP-99429$1.67 -
Out Of Stock
HK416, MR556 Upper Receiver - Stripped - No Forward Assist
H&K Heckler & Koch
$489.99HK416, MR556 Upper Receiver - Stripped - No Forward Assist Genuine HK HK416 upper receiver designed for HK416 and MR556 rifle platforms. This stripped receiver does not include a forward assist or ejection port door. Compatible With HK416, MR556 MR223HKP-22506$489.99 -
HK UMP Apparel - Hats, Patches, and Shirts
HKP HK Parts
$0.00HKP HK UMP Apparel and Patch Collection Represent your platform with the HK Parts UMP Series apparel and accessories lineup. Built for enthusiasts who appreciate iconic firearms and clean, understated design, this collection delivers premium...HKP-22459-M$0.00 -
HK MP5, MP5K Optic Mount - Optic, NV Laser - Picatinny, Aimpoint T-1, T-2, ACRO P-1, P-2
MI Midwest Industries
$174.95Midwest Industries HK MP5, MP5K Optic and IR, NV, Laser Mount for Aimpoint T-1/T-2 and Aimpoint ACRO Tall, clamp-on optic and laser mount for MP5 and MP5K pattern firearms. Allows you to run a micro red dot and an IR illuminator, and/or laser at the same...HKP-22393-M$174.95 -
HK91, G3 Front Sight Tower - SURPLUS
H&K Heckler & Koch
$16.95H&K G3/91 Front Sight Tower - SURPLUS UNIT QUALITY MAY VARY - SEE PHOTOS FOR EXAMPLE OF CONDITION RANGE Priced for ONE Unit - Sold Individually Used genuine H&K steel front sight tower for the G3 & HK91. Provides the front sight post assembly...HKP-22158$16.95 -
HK416, MR556, AR-15, M4 Magazine - TMAG Gen 3 - 20 Round - Translucent OD Green
Magpul
$24.95Magpul AR/M4 TMAG® 20 Round GEN M3™ Magazine - Translucent OD Green US-made translucent 20 round magazine optimized for AR/M4 platforms, but modified to permit operation with other 5.56 and .223 STANAG-compatible rifles. Specifications: Made...HKP-22035$24.95 -
HK VP9, P30, HK45 Elevated Night Sights
H&K Heckler & Koch
$74.95H&K VP9/P30/HK45 Elevated Night Sights Elevated night sight set for improved visibility under low light conditions. Compatible With: HK VP9/VP9SK/VP40/VP9L ***Does NOT fit VP Optic Ready models HK...HKP-22018$74.95