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 Optic Mount - .22LR
HKP HK Parts
$119.95HKP HK MP5 .22LR - Universal Optic Mount The HKP universal optic mount incorporates the VP9 optic footprint, allowing the user to install any VP9 compatible optic on their MP5 .22LR with a German or HKP VP9 optic plate. Swap optics like Trijicon,...HKP-20968-M$119.95 -
Out Of Stock
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Subsonic - Speak No Evil Monkey
Zenith
$43.95Zenith 30 Round HK MP5 Monkey Subsonic Labeled Magazine Easily identify a magazine loaded with supersonic rounds versus a magazine loaded with subsonic rounds. Features: Durable electro-plated black finish for exceptional corrosion resistance All steel...HKP-20916$43.95 -
HK MP5, HK94, SP5 Binary Trigger Group - Ambi - BFSIII - 9mm
FA Franklin Armory
$849.95Franklin Armory BFSIII HK-C1 - Trigger Group For MP5, SP5 Our new and improved HK-AR Navy ambidextrous lower housing is now paired with Franklin Armory binary trigger pack and a Magpul MOE grip to make this complete MP5-AR style binary trigger...HKP-20642$849.95 -
HK VP9 Tri-Mag Pouch - RH - Size 23
Comp-Tac
$82.95Tri-Mag Pouch - RH - VP9 - Size 23 The shooter's workspace is vital during a reload. Whether in competition, training or critical incident, the Comp-Tac® Tri-Mag is built to shave seconds off reload time. The clean, comfortable design is a simple way...HKP-20399$82.95 -
On Sale
HK91, G3 Tapered Barrel - 16" - Threaded 5/8x24 RH
PTR
Now: $188.95Was: $229.95PTR HK G3/91 Tapered Barrel - Threaded 5/8x24 PTR manufactured US made barrel for the HK91, G3 & PTR style of firearms. This 16" barrel will allow you to add a threaded flash hider that is threaded 5/8x24 US threads. Specifications: Overall Length...HKP-19472Now: $188.95Was: $229.95 -
HK417, MR762 Take Down Tool
H&K Heckler & Koch
$9.95H&K HK MR762/417 Take Down Tool This item is used to take down the upper receiver from the lower receiver as well as tighten down the stock movement on the E1/E2 stock. Each tool will be stored in the rear of the E1/E2 stock and may come in black or...HKP-14438$9.95 -
Out Of Stock
HK416, MR556 2-Stage Trigger
Geissele
$489.95Geissele Automatic's two stage trigger for the HK MR 556 rifle. The HK MR556 trigger is similar to Geissele's SSA with a 4.5 total pull weight. It can be used in both the HK 556 and semi-auto HK 416's. Each Trigger comes with full installation...HKP-16464$489.95 -
HK416, HK417, MR556, MR762 Bolt Catch Spring
H&K Heckler & Koch
$6.95H&K HK MR556/762/416/417 Bolt Catch Spring Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-16661$6.95 -
HK G36C, G36K Gas Piston
H&K Heckler & Koch
$99.95HK German G36C & G36K Gas Piston - Complete New HK German factory G36C and G36K gas piston complete with sealing rings installed. A great spare or replacement part. This is also a popular part for those upgrading to an SL8 to G36K or C barrel length...HKP-00352$99.95 -
HK G36, UMP Sear Spring
H&K Heckler & Koch
$8.95HK UMP, USC, G36, & SL8 Sear Spring This part is used in conjunction with the sear in the trigger body of the lower.HKP-01866$8.95 -
HK91, G3 Shell Deflector - Weld On
H&K Heckler & Koch
$18.95New HK German G3, 91, PTR91 Steel Case Deflector - Weld On This steel weld-on addition for the G3 military rifle was developed to help fellow soldiers from hitting each other with hot spent brass and deflect the brass forward of the shooter at...HKP-12747$18.95 -
HK91, G3 Tactical Rail - 6 Inch
HKP HK Parts
$24.95HKP Tactical Rail - 6 Inch The six mounting screws are also included with each rail. This rail will fit on either the left or right side or the bottom of the PTR and HK91/93 tactical handguards. Up to three rails can be used on each forearm. Compatible...HKP-00831$24.95