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 4 Position (0,1,3,F) Burst Trigger Group - Push Pin
H&K Heckler & Koch
$3,299.95HK 4 Position Burst Trigger Group - G3, 91, PTR - German HK HK G3 & HK 91 4 Position (0,1,3,F) Burst Trigger Group Complete Factory German. Rare & Hard To Find. Setup in 7.63/.308 For Factory Swing down G3/91 Conversions Or Factory Full...HKP-00208$3,299.95 -
HK MP5K, SP89, SP5K Barrel - 9mm - 3 Lug - Threaded 1/2x32
B&T Brugger & Thomet
$399.95B&T HK MP5K/SP5K/SP89 9mm Barrel - Threaded 1/2x32 - 3-Lug New from B&T Switzerland, this cold hammer-forged (CHF) and nitrided barrel is specifically designed for the HK SP5K. Manufactured to exact HK factory specifications, it features a...HKP-17908$399.95 -
Out Of Stock
HK MP5SD Barrel - 9mm - Threaded 18x1
HKP HK Parts
$169.95HKP MP5SD 9mm Barrel - Threaded 18x1 Made in the USA from 416 stainless steel, this high-quality barrel undergoes the highly desirable nitride process for a super hard, durable finish. Precision milled to the latest specifications, it features...HKP-17755$169.95 -
HK MP5K Apparel - Hats, Patches, and Shirts - V2
HKP HK Parts
$0.00HKP HK MP5K Apparel and Patch Collection - Version 2 Represent your platform with the HK Parts K Series apparel and accessories lineup. Built for enthusiasts who appreciate iconic firearms and clean, understated design, this collection delivers premium...HKP-22455-M$0.00 -
Out Of Stock
HK VP9 Optic Plate - Holosun K, Shield RMSc - Optics Ready - Red Dot Pistol Mount
H&K Heckler & Koch
$50.95Heckler and Koch Holosun K Optics plate for VP9 OR Models Genuine Heckler and Koch optics plate for HK VP9 Optics Ready (VP9OR) pistols. Use factory filler plate screws to install. Specifications: Made in Germany Steel Optics plate only...HKP-22381$50.95 -
Picatinny Optic Mount Shield - Aimpoint T2, H2 - S.W.O.R.D.S
Frost Defense
$239.95Aimpoint T-2, H-2 Optic Mount - S.W.O.R.D.S - Picatinny Mount The S.W.O.R.D.S Enhanced optic shield designed for Aimpoint T2/H2 red dot sights. This patent-pending mount system provides robust glare and impact protection by surrounding the ocular and...HKP-22338-M$239.95 -
HK MP5 Handguard Conversion - SD Style - MLOK
HKP HK Parts
$324.95HKP HK MP5 SD Handguard Conversion - M-LOK Transform your standard MP5 into the classic SD-style with the HKP MP5 SD handguard conversion. This drop-in handguard is designed solely for aesthetics, providing your MP5 with the distinctive suppressed SD...HKP-22200$324.95 -
Century Arms AP51 Fixed Stock - Cerakoted - Enhanced Buffer
HKP HK Parts / Heckler & Koch
$199.95H&K/HKP Century AP51 Fixed Stock - Cerakoted - Enhanced Buffer Each stock starts life as an excellent condition surplus stock. The stocks are then refinished and the recoil rod modified to work specifically with the AP51. Available exclusively...HKP-22183-M$199.95 -
HKP HK P30 MOD 1 Compensator
HKP HK Parts
$179.95HKP HK P30 MOD 1 Compensator The HK Parts MOD 1 compensator strikes a seamless balance of form and function. Users will immediately notice the reduction in muzzle flip and recoil, getting you back on target quicker. Each MOD 1 comp includes both the rail...HKP-22163$179.95 -
HK Hammer and Pressure Shank Pin - 90 Series
H&K Heckler & Koch
$3.95H&K Hammer and Pressure Shank Pin - 90 Series For pinned-style hammer and shanks, this pin securely holds the two components together. This original H&K production part has never been installed. Made from correct German-spec steel to meet exact...HKP-21854$3.95 -
HK P30L Conversion Barrel - .40 S&W to 9mm - Threaded 1/2x28
RCM
$214.95RCM HK P30L .40 to 9mm Conversion Barrel - Threaded - 1/2x28 This 9mm conversion barrel is a drop-in replacement that allows your P30L to shoot the ubiquitous 9mm cartridge. The conversion barrel features a standard 1/2x28 thread pitch and includes...HKP-21785$214.95 -
On Sale
HK UMP, USC 4 Piece M-Lok Set - Anodized
HKP HK Parts
Now: $99.95Was: $149.95HKP HK UMP/USC 4 Piece M-Lok Set - Anodized Upgrade your UMP and USC with the HK Parts 4-piece M-Lok set, designed to eliminate the hassle of snagging and shredding your knuckles on Picatinny rails. This exceptional set significantly expands the...HKP-21663-MNow: $99.95Was: $149.95