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, MP5K, SP5, SP5K Magazine - 30 Round - LEO Marked
Zenith
$52.95Zenith 30 Round HK MP5 Magazine - LEO Marked Replica LEO laser markings that closely resemble those found on factory magazines. These markings are expertly lasered onto Zenith magazines, successfully emulating the sought-after LEO markings of authentic...HKP-21612-M$52.95 -
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - 5 Pack
Zenith
$184.9530 Round Magazine - Zenith - MP5, MP5K - 5 Pack Features: Durable electro-plated black finish for exceptional corrosion resistance All steel construction Round count indicator holes on the rear of the magazine Stainless steel follower Reinforced feed...HKP-20672$184.95 -
On Sale
HK P30 Series Magazine Release - Enhanced
HKP HK Parts
$31.84 - $49.95HKP HK Parts Enhanced Alloy Magazine Release for HK P30, HK P30SK, and HKP30L New HK Parts Enhanced and Over-sized Magazine Release. The oversized magazine Release increases the overall surface area and makes it possible to release the magazine...HKP-21153-M$31.84 - $49.95 -
HK Pistol O-Ring - .40 S&W Green
H&K Heckler & Koch
$4.95O-ring for .40 caliber barrels Features: Original green color no longer in production Same high-temperature rubber as the newer black O-rings Factory part that provides the seal between the slide and the barrel Provides a secure lockup and increased...HKP-01985$4.95 -
HK MP5, HK94 Optic Mount - Extended - Low Profile - Windowed
MFI
$124.95MFI MP5, 94 Extended Low Profile Scope Mount-Windowed MFI's newest addition to the line-up is a full inch longer, measuring 6.5 inches and featuring windows to view the factory serial number through the mount. This option is the longest, low-profile...HKP-16225$124.95 -
On Sale
HK Contract 3 Point Sling - OD Green
H&K Heckler & Koch
Now: $39.71Was: $52.95HK Contract 3 Point Sling - OD Green HK contract 3 point sling NIW. This is the best valued HK 3 point sling available for the HK 90 series of firearms. HK Green in color.HKP-19184Now: $39.71Was: $52.95 -
HK91, G3, HK93 Stock or Brace Adapter - with Mil-Spec AR Buffer Tube
HKP HK Parts
$124.95HKP HK Mil-Spec AR Brace/Stock Adapter & Buffer Tube AR15 to HK 90 series stock adapter for AR15 stocks that includes the mil-spec buffer tube and castle nut to use any mil-spec AR15/M16 stock of your choice on your HK rifle or SBR build. With the...HKP-16583$124.95 -
HK MP5 Sling Clip for Magwell
HKP HK Parts
$9.95HKP MP5 Sling Clip for Magwell This is the factory correct sling clip that attaches to the left hand side of the magwell. Note: 3 rivets are required to attach - sold separatelyHKP-18313$9.95 -
HK Vertical Foregrip - RAL8000
H&K Heckler & Koch
$69.95H&K Vertical Foregrip - RAL 8K Each Vertical Grip features the factory HK markings & HK's unique locking system. Rotating the knob at the base of the grip to engage/disengage the Picatinny locking piece allows the user to install/remove the...HKP-17689$69.95 -
HK91, G3 Tactical Grip for Metal Grip Frames
Ergo
$59.95Ergo G3, 91, PTR Tactical Grip For Metal Grip Frames The ergonomically enhanced ERGO Tactical Deluxe Grips are compatible with all metal HK grip frames, both the semi-auto & full auto metal grip frames. Compatible With: HK 91, G3, PTR, CETME, 93,...HKP-14092$59.95 -
HK VP9, VP9SK Reflex Sight - Direct Fit SCS
Holosun
$359.95Holosun HK VP9 SCS-MOA Reflex Sight This solar charging sight is designed to attach directly to the slide without an adapter plate and uses an innovative solar charging system with multi-directional light sensors to automatically adjust brightness in...HKP-21336$359.95 -
B&T Short Style Vertical Foregrip - Picatinny - Black
B&T Brugger & Thomet
$75.00B&T Short Style Vertical Grip - Picatinny - Black B&T Vertical Grip - Short Style- Fixed Swiss made B&T short vertical forend grip. This foregrip is designed to be easily attached to the picatinny rail using the knurled screw. Made of black...HKP-18426$75.00