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 Receiver Flat - US Made
PTR
$99.95HK G3, 91, PTR & CETME Flat - PTR Made by PTR with original HK tooling using factory specifications and a properly stamped receiver. No FFL is required as this is an unfolded flat that ships directly to the customer. This US made receiver flat...HKP-02320$99.95 -
HK VP9, P30 Magazine Extension Kit - +5 Round
HKP HK Parts
$39.95 - $54.95HK Magazine Extension +5 Capacity For HK VP9, VP40 & P30, P30L The new and improved Gen 2 Model is now shipping! HK Parts magazine extension +5 kit adds five additional rounds to the HK VP9/P30 magazine with the simple swap of the floor plate and...HKP-21108-M$39.95 - $54.95 -
On Sale
KCI Glock Magazine - 26 Round - .45 ACP
Now: $9.95Was: $22.95KCI Glock 26-Round.45 ACP Magazine Compatible With: Glock .45 ACP double stack models 21 & 30 Features: Hardened steel insert encased in high-tech polymer (fully metal lined) Please Note: Like many new magazines, these have a stiff spring from...HKP-02298Now: $9.95Was: $22.95 -
HK MP5K Stock - KES
Safety Harbor Firearms
$279.99KES HK MP5K Stock The all-new KES for the MP5k is designed to fit HK clones with two pins affixing the rear receiver cap. Specifications: Guide rods slide into the existing slots present on the receiver Rods machined to go underneath the reinforcing...HKP-21087$279.99 -
On Sale
HK416, MR556 Magazine - 30 Round - Maritime
H&K Heckler & Koch
Now: $69.95Was: $83.95Heckler and Koch HK416 and HK MR556 30-Round Maritime Magazine - German HK The HK 416 and HK MR556 magazines will also fit all AR15/M16 variants. Designed to provide optimum ammunition feeding for any M16/M4/AR15-type weapon. Originally developed by HK...HKP-00487Now: $69.95Was: $83.95 -
Barrel O-Ring - .45 ACP
H&K Heckler & Koch
$4.95Heckler and Koch .45 ACP Caliber Barrel O-Ring in Black A great spare and a much-needed part for your HK barrel. This factory part is a high-wear item, as the O-ring provides the seal between the slide and the barrel, which provides a secure lockup with...HKP-00296$4.95 -
HK MP5, SP5 Enhanced Selector Kit - Polymer and SL Grips
Magpul
$47.95Magpul Industries HK MP5/SP5 Enhanced Selector Set The Magpul ESK (Enhanced Selector Kit) offers a versatile range of selector levers specifically designed for the Magpul SL Grip Module and HK Polymer Trigger Housings. The ESK delivers a modular,...HKP-19308$47.95 -
Out Of Stock
HK VP9 Barrel or Thread Protector O-Ring - Green
H&K Heckler & Koch
$4.95HK German 9mm barrel O-ring - Green For thread protector or barrel slot on the Elite barrel. The o-ring is a high wear and replacement item. Stock up at the lowest price in the country. To save even more order 10 or more and get an additional $1 off per...HKP-19729$4.95 -
Out Of Stock
HK90 Series Front Sight Sling Loop
H&K Heckler & Koch
$39.95H&K Sling Loop For Front Sight Tower - 90s series This HK OEM item is brand new and not surplus or used. This is a must-have item for all of your re-barrel jobs, or for when you need to mount a sling loop to an HK build. This item is offered at the...HKP-00144$39.95 -
Out Of Stock
HK33, HK53, HK93 30 Round Magazine
AC-Unity
$19.95AC-Unity 30 Round HK33 Magazine The AC-Unity HK33 magazine is formed from an advanced polymer-resin/granulate that is lightweight and shock resistant. Metal parts are hardened and corrosion resistant. These magazines have a long lifespan, capable...HKP-21636$19.95 -
HK Recoil Rod Guide Ring - Recoil Rod Assemblies - Enhanced
HKP HK Parts
$2.39HKP Recoil Rod Guide Ring For Recoil Rod Assemblies - Enhanced New enhanced material for greater longevity and durability. Our US made recoil rod guides are the made from the strongest most durable material available much better than the basic nylon as...HKP-17829$2.39 -
Out Of Stock
HK USP Magazine - 9mm - 15 Round
H&K Heckler & Koch
$54.95H&K 15 Round HK USP 9mm Magazine New factory-fresh & the latest HK production USP 9mm 15 round magazine. Compatible With: USP 9mm Full Size USP 9mm Tactical USP 9mm Elite, Expert (without jet funnel installed) USP P8HKP-00323-M$54.95