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
HK VP9 Gen1 V1 Rail Mount Compensator
HKP HK Parts
Now: $134.95Was: $189.95HKP HK VP9 Gen1 V1 Rail Mount Compensator *DO NOT USE COMPENSATOR WITH A THREAD PROTECTOR INSTALLED ON THE BARREL. Doing so will result in damage to your firearm and compensator.* Specifications: Length - 4 1/4 inches Height - 2 1/2...HKP-19566Now: $134.95Was: $189.95 -
On Sale
HK USP .40 S&W +5 Magazine Extension
HKP HK Parts
Now: $39.95Was: $49.95HKP HK USP .40 S&W +5 Magazine Extension HK Parts magazine extension +5 adds 5 additional rounds to the full size USP & USP Tactical 13 round magazine. It uses the existing mag body, spring, and follower. Just slide the magazine extension on and...HKP-18645-MNow: $39.95Was: $49.95 -
HK USP Night Sight Set - Green
Meprolight
$99.99Meprolight HK USP Night Sight Set - Green Features: Unequaled Light Performance Brightest Night Sights Available Today Used by Military & Law Enforcement All Tru-Dot sights are covered by a 12-year usable illumination warranty to the original...HKP-01906$99.99 -
HK USP, P2000, HK45 Trigger Return Spring - Heavy 8.5 lb.
H&K Heckler & Koch
$11.95Heckler and Koch Heavy 8.5 lb. Trigger Return Spring Also known as the heavy LEM trigger spring for the LEM and TGS conversions. Compatible With: USP Full Size USP Compact USP Tactical USP Elite USP Expert P2000 (not for the SK...HKP-02265$11.95 -
Out Of Stock
HK SP5K Mag Release Upgrade Kit - 9mm - Drop In Paddle
HKP HK Parts
$74.95HKP HK Parts Anti-Rattle Roller Tipped "Paddle" Magazine Release Install Kit for HK SP5K No modifications! No refinishing! Complete drop-in kit included. New USA made busing for a drop-in install kit for the HK SP5K. This kit will allow any end-user to...HKP-18192$74.95 -
HK90 Series Cocking Tube End Cap
H&K Heckler & Koch
$39.95H&K Cocking Tube End Cap/Dust Cap This part is Factory HK, painted black and not surplus or old stock. Each is factory-fresh and manufactured in steel. Compatible With: Compatible with all 90 series HK firearms and clones that use a triple...HKP-00099$39.95 -
On Sale
HK P2000, USPC Magazine Extension - +5 - 9mm
HKP HK Parts
Now: $39.95Was: $49.95HKP +5 9mm Magazine Extension for HK P2000 and HK USPC HK Parts magazine extension +5 adds 5 additional rounds to the HK P2000, 13 round magazine. It uses the existing mag body, spring, and follower. Just slide the magazine extension on and tighten it...HKP-18661-MNow: $39.95Was: $49.95 -
Out Of Stock
HK416 Selector Lever Kit - Full Auto - Ambidextrous - 3-Position
H&K Heckler & Koch
$139.95Heckler and Koch HK416 Full Auto Ambi Selectors Kit - German HK Each set comes complete with everything you will need to upgrade your HK 416 to an ambi selector lever set up. Factory correct German HK and all steel construction. Includes: 2 X selector...HKP-17552$139.95 -
HK USPC, P2000 Magazine Floorplate - .40 S&W - 12 Round
H&K Heckler & Koch
$22.95HK USP Compact/ P2000 .40 12 Round Floor Plate Flat - Low Profile Compatible With: HK USP Compact 40 S&W 12 Round Magazine HK USP Compact 357 SIG 12 Round Magazine HK P2000 40 S&W 12 Round MagazineHKP-01435$22.95 -
HK91, G3 Buttstock, Grip, Handguard Set - Jungle Green - Surplus
H&K Heckler & Koch
$26.95Original German Army Used Surplus G3, 91, PTR Tropical/Jungle Green Stock Set Factory HK German production. Each stock set is used but in perfect working order. Each set is in overall good condition. Most will clean up nicely with a little TLC. A...HKP-16331$26.95 -
On Sale
HK MP5, HK90 Series AR Stock or Brace Adapter
HKP HK Parts
Now: $79.95Was: $99.95HKP AR Brace/Stock Adapter To HK 90 Series Firearms For use on any commercial, mil-spec, or pistol AR15/M16/M4 stock, brace, & buffer tube of your choice. Perfect for your HK rifle, pistol, or SBR build. With our M4 adapter, you can use your existing...HKP-16550Now: $79.95Was: $99.95 -
HK MP5, HK90 Series Hammer Strut
H&K Heckler & Koch
$9.95H&K G3,91,PTR, 93,33 & MP5, 94 Hammer Strut New HK German Hammer Strut for 90 series rifles and pistols. A perfect spare to have on hand. This is a non-pinned hammer spring shank. Perfect for your HK project or rebuild. Compatible With: The...HKP-15445$9.95