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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HK UMP, USC Lower Axle Pin
H&K Heckler & Koch
$9.95HK UMP & USC Lower Axle Pin - US 3 lower axle pins are used for each trigger group or lower all the same size with the exception of the mag release axle on the USC.HKP-19383$9.95 -
Out Of Stock
HK45 Barrel - .45 ACP - 5.87" - Threaded 16x1 LH
RCM
$250.00RCM HK 45 .45 ACP Tactical Barrel - Threaded 16x1 LH Upgrade your HK45 with the RCM Tactical .45 ACP barrel. Made from fully heat-treated 4140R steel, this barrel is double stress-relieved and coated with nitrided for superior durability and corrosion...HKP-08926$250.00 -
HK VP9, P30, HK45 Night Sight Set
Meprolight
$99.99Meprolight Night Sight Set for HK VP9, HK45, and HK P30 Bright and Tough Night Sights are three-dot iron sights that increase night-fire shooting accuracy by as much as five times over conventional sights. Equally impressive, they do so with the same...HKP-02225$99.99 -
Out Of Stock
HK P2000,P2000SK HD Night Sight Set - Orange
Trijicon
$154.99Trijicon HK P2000/P2000SK HD Night Sight Set - Orange The HD Night Sights were specifically created to address the needs of tactical shooters. The three-dot green tritium night sight set front sight features a taller blade and an aiming point...HKP-14963$154.99 -
X300 Tactical Light - Ultra LED
Surefire
$341.95Surefire X300 Ultra - LED Tactical Light Specifications: High-efficiency LED that generates 1000 lumens of brilliant white light Good reach and significant surround light for peripheral vision No filament to burn out or break with LED lights Generates...HKP-13486$341.95 -
On Sale
HK MP5K, SP89 End Cap with Buffer - 9mm - Steel
Choate
Now: $38.95Was: $45.95MP5K & SP-89 Steel End Cap With Replaceable Rubber Buffer Fits perfectly on all HK MP5K-type builds or projects. All metal construction, so you know it will last. Each unit comes with a sling loop for use with multiple sling types. Compatible...HKP-00395Now: $38.95Was: $45.95 -
On Sale
HK MP5 Parts Kit - 10mm - Pistol
HKP HK Parts
Now: $1,503.95Was: $1,879.95HKP HK Parts HK MP5 Parts Kit - 10mm - Pistol With Flat, Top Rail, and Weldment Set - 10mm HK Parts MP5 Build Kit is the best priced value available anywhere. There is a limited supply and they will be gone before you know it. The MP5 10mm parts kit...HKP-18409Now: $1,503.95Was: $1,879.95 -
3 Point Sling Holding Clip - Replacement
H&K Heckler & Koch
$19.95New HK German 3-Point Sling Rear Stock Holding Clip This is the hard-to-find holding clip that secures the standard 3-point HK sling to the A2 or A3 stock. The rear sling clip can become weak and break, making your 3-point sling useless. The sling...HKP-01043$19.95 -
AR-15 Stock - CTR 6 Position - Mil-Spec - Magpul
Magpul
$79.95Magpul AR-15 CTR 6 Position Stock - Mil-Spec The Magpul CTR (Compact/Type Restricted) Commercial-Spec Model is a drop-in replacement buttstock for AR15/M16 carbines using Mil-Spec-sized receiver extension tubes. The streamlined A-frame profile avoids...HKP-02375$79.95 -
On Sale
HK G36 Picatinny Adapter - Gen 2
HKP HK Parts
Now: $111.95Was: $139.95HKP HK G36 Picatinny Adapter - Gen 2 Elevate your G36 with the Gen 2 Picatinny adapter, designed to effortlessly attach any 1913-style stock or brace. Our refined design guarantees a secure attachment for stocks and braces and delivers an adjustable...HKP-21866Now: $111.95Was: $139.95 -
$8.95 -
HK VP40, P30 Series Magazine - 20 Round - Red
HKP HK Parts / Heckler & Koch
$89.95HKP and Heckler and Koch 20 Round HK VP40, HK VP40 Tactical, HK P30, HK P30L, HK P30S .40 S&W Magazine - Red HK Parts +7 magazine extension coupled with a 13 round .40 cal factory German magazine body adds 7 additional rounds. For a total fully...HKP-20183$89.95