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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HK91, G3 Lower, Complete - SEF Full Auto - Green - Surplus
H&K Heckler & Koch
$349.95HK Heckler and Koch Complete Full Auto Steel Green Lower SEF from Surplus Stock for HK91, G3 Each lower includes a complete full-auto trigger pack, selector lever, green grip, metal SEF grip frame,...HKP-16215$349.95 -
HK91, G3 Firing Pin Spring - Used
H&K Heckler & Koch
$4.95Heckler and Koch 91/G3 (7.62x51/.308) Firing Pin Spring - Used This is a common repair and replacement item. Grab one for a spare, just in case.HKP-16711$4.95 -
On Sale
AR-15 C.A.R.L. 3-Round Limiter Lever for FRTs
ST Inc
Now: $126.88Was: $145.00ST Inc. 3-Round C.A.R.L. Lever for AR-15 Rifles Equipped with AS Designs ARC-Fire and Atrius Trigger Systems The C.A.R.L. (Cam Activated Reset Limiter) is a drop-in FRT-piggy-back system that...HKP-22562Now: $126.88Was: $145.00 -
On Sale
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - TiN Coated
Zenith
Now: $89.96Was: $99.95Zenith 30 Round HK MP5 9mm Magazine - TiN Coated Elevate your gear with our TiN coated Zenith magazines. Each magazine begins as a regular 9mm, 30 round mag that is expertly disassembled, coated with...HKP-21645Now: $89.96Was: $99.95 -
On Sale
HK93 Wide Handguard - Short
AC-Unity
Now: $71.06Was: $78.95AC-Unity HK93 Wide Handguard - Short AC-Unity wide/short handguard, specifically designed for the HK33, HK93,HK34 and G3K. This handguard is also the perfect fit for PTR rifles utilizing the shorter...HKP-21638Now: $71.06Was: $78.95 -
HKP Icon Patch
HKP HK Parts
$5.99HKP Black and Red Lasercut Patch Get your hands on some of our premium new patches! Features: Velcro Back Official HKP MerchandiseHKP-21296$5.99Out Of Stock
HK VP40 Conversion Barrel - .40 S&W to .357 SIG - Non-Threaded
RCM
$237.50RCM HK VP40 .40 S&W To .357 SIG Conversion Barrel - Non-ThreadedHKP-17373$237.50On Sale
HK VP9, P30, HK45C HD Night Sight Set - Yellow
Trijicon
Now: $152.96Was: $169.95Trijicon HK VP, P30, HK45C HD Night Sight Set - Yellow The HD Night Sights were specifically created to address the needs of tactical shooters. The three-dot green tritium night sight set front sight...HKP-14558Now: $152.96Was: $169.95On Sale
X300 Tactical Light - Ultra LED
Surefire
Now: $307.76Was: $341.95Surefire X300 Ultra - LED Tactical Light Specifications: High-efficiency LED that generates 1000 lumens of brilliant white lightHKP-13486Now: $307.76Was: $341.95Out Of Stock
HK91, G3, PTR Training Bolt Group, Complete - Full Auto
H&K Heckler & Koch
$0.00Heckler and Koch F/A Complete Training Bolt Group for HK91, G3, and PTRHKP-18265$0.00Out Of Stock
HK416, MR556 Handguard - 9.75" Quad Rail - RAL8000 - Picatinny
H&K Heckler & Koch
$497.95H&K HK MR556/416 Handguard Picatinny Quad Rail - 9.75" - RAL 8K Handguard with Picatinny quad rail profile on 3, 6 and 9 o'clock, STANAG 4694 profile on 12 o'clock. New HK German. Compatible With:HKP-18553$497.95Out Of Stock
HK416, MR556, HK417, MR762 Front Folding Sight - 28mm
H&K Heckler & Koch
$209.95Heckler and Koch's 28mm Front Folding Sight for HK416, MR556, HK417, MR762HKP-00026$209.95