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 MP5, HK91, G3, HK93, HK94, Clones Heckfire 2-Stage Trigger
Shooting Sights
$399.95Heckfire trigger for MP-5, HK 91/93/94, G3, Clones 2-stage trigger with around 5lb total pull. Drop-in to all lowers. The updated selector levers work for all lowers (you no longer need to tell us...HKP-20173$399.95 -
HK VP40, P30 Magazine - 20 Round - .40 S&W
HKP HK Parts / Heckler & Koch
$89.95HKP HK Parts and Heckler and Koch 20 Round .40 Cal Magazine for HK VP40, HK VP40 Tactical, HK P30, HK P30L, HK P30S HK Parts take an existing 13 round mag the +7 mag extension and assembles them...HKP-19546$89.95 -
On Sale
HK MP5, SP5K Bore Cleaner - Bore Boss Pull-Through - 9mm
Real Avid
Now: $11.66Was: $12.95Real Avid Bore Boss Pull-Through Bore Cleaner - 9mm From the barrel of innovation comes the ultra-compact Bore Boss, the first-ever self-storing, easy-feeding, clean-pulling, field-ready,...HKP-19398Now: $11.66Was: $12.95 -
HK Rifle Cleaning Wick Set - 8 Piece Set - Universal
H&K Heckler & Koch
$1.95Original German Army Issue HK91/G3/PTR Cleaning Kit Wick - Set of 8 Originally issued for the G3,91 & MG3 firearms but will work on pretty much any and all rifles & pistols. Each set comes with 8...HKP-17646$1.95 -
Out Of Stock
HK MP5, MP5K Paddle Magazine Release - Anti-Rattle Roller Tipped - 9mm
HKP HK Parts
$49.47HKP HK Parts 9mm Anti-Rattle Roller Tipped Paddle Magazine Release for HK MP5 and MP5K Latest generation paddle mag release for all 9mm MP5, MP5K style builds. Made to the latest German specs,...HKP-17570$49.47 -
On Sale
HK MP5, MP5K Flash Hider - 3 Lug - 9mm
HKP HK Parts
Now: $89.96Was: $99.95MP5, MP5K Flash Hider - 3-Lug - 9mm Installs & un-installs in seconds. New style HK flash hider with the latest style locking latch that sits flush when locked. Made in the USA from ordnance grade...HKP-20170Now: $89.96Was: $99.95 -
Bolt Head Locking Roller - -4, 7.96mm - Under-sized
H&K Heckler & Koch
$27.99Heckler and Koch -4 7.96mm Undersized Roller for Bolt Heads The proper roller size is essential for proper head spacing and bolt gap. New HK German not surplus or used goods. German-made -4 roller,...HKP-00504$27.99 -
HK Universal Magazine Spring - Extended
HKP HK Parts
$11.95Universal Extended Magazine Spring For HK Parts Extensions. This universal extended magazine spring fits most of our extensions from the VP9 to the Mark 23 extension kits. These are also the correct...HKP-20324$11.95 -
On Sale
HK MP5 Folding Brace - .22LR - Billet Adapter
HKP HK Parts / SB Tactical
Now: $202.46Was: $224.95SB Tactical Side Folding Brace with Billet Adapter for the HK MP5 .22 model: This is not your standard SB Tactical side folding brace. We pair the standard SBT brace with our own billet aluminum...HKP-19951Now: $202.46Was: $224.95 -
On Sale
HK MP5 Picatinny Rail - Raised
HKP HK Parts
Now: $121.46Was: $134.95HKP HK MP5 Raised Picatinny Rail The HK Parts MP5 Raised Picatinny Rail offers the best of both worlds featuring an unimpeded view of the factory iron sights and an elevated mount for your favorite...HKP-21601Now: $121.46Was: $134.95 -
Out Of Stock
HK Rear Sight Spring - German
H&K Heckler & Koch
$4.95H&K German Rear Sight Spring HK German rear sight spring for rear diopter sights.HKP-00146$4.95 -
HK45 Magazine Floorplate - .45 ACP - 10 Round
H&K Heckler & Koch
$9.9510 Round HK 45 Magazine Floorplate This is HK's Newest .45 ACP caliber pistol. Compatible With: HK45 PistolHKP-02476$9.95