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
KCI Glock 50-Round 9mm Drum Magazine
KCI
Now: $29.95Was: $69.95KCI Glock 50-Round 9mm Drum Magazine 50 round 9mm drums for firearms designed to feed Glock double stack 9mm magazines. Perfect for Glock pistols, Glocks chassis systems, and PCCs (pistol caliber carbines). CLEARANCE ITEMS ARE FULLY FUNCTIONAL AND...HKP-14321Now: $29.95Was: $69.95 -
HK .45 ACP O-Ring - Barrel
H&K Heckler & Koch
$4.95Heckler and Koch .45 ACP Caliber Barrel O-Ring in Black A great spare and a much-needed part for your HK barrel. This factory part is a high-wear item, as the O-ring provides the seal between the slide and the barrel, which provides a secure lockup with...HKP-00296$4.95 -
Out Of Stock
HK USP Magazine - 9mm - 15 Round
H&K Heckler & Koch
$49.00H&K 15 Round HK USP 9mm Magazine New factory-fresh & the latest HK production USP 9mm 15 round magazine. Compatible With: USP 9mm Full Size USP 9mm Tactical USP 9mm Elite, Expert (without jet funnel installed) USP P8HKP-00323-M$49.00 -
HK Recoil Rod Guide Ring - Recoil Rod Assemblies - Enhanced
HKP HK Parts
$2.39HKP Recoil Rod Guide Ring For Recoil Rod Assemblies - Enhanced New enhanced material for greater longevity and durability. Our US made recoil rod guides are the made from the strongest most durable material available much better than the basic nylon as...HKP-17829$2.39 -
HK MP5, SP5, PDW Rear Sight Drum
HKP HK Parts
$34.95HKP MP5, SP5 & PDW Rear Sight Drum Factory correct HK spec USA made MP5, SP5, MP5K PDW & HK94 rear sight drum. This is also the correct rear sight drum for the MP5K PDW or MP5K-N family of firearms. This is also a very popular upgrade for many of...HKP-18202$34.95 -
HK91, G3 Cocking Handle - Extended
HKP HK Parts
$64.95HKP HK91, G3 Extended Cocking Handle - Extended Extended cocking handle designed to improve grip and leverage on HK91 and G3 pattern firearms. The enlarged profile provides increased surface area for easier manual operation, particularly during charging...HKP-00199-M$64.95 -
Grayguns HK P30, P2000 Short Reset System
Grayguns
$90.00Grayguns HK P30, P2000 Short Reset System Replicate our custom in-house short reset conversion with a drop-in kit for your HK P2000 or P30 without a thumb safety. Cut from bar stock steel, these kits provide an exacting fit for easy install...HKP-19755$90.00 -
HK VP9SK, P30SK Magazine Floorplate - 9mm - Extended - Rubberized
H&K Heckler & Koch
$22.95HK German VP9SK & P30SK Rubberized Extended Magazine Floor Plate VP9SK, P30SK factory German manufactured extended rubberized magazine floor plate fits all VP9SK & P30SK magazines. The perfect floorplate if you want a place for your pinky when...HKP-18086$22.95 -
Out Of Stock
Stock or Brace - Tailhook Mod 1C
Gear Head Works
$164.95Gear Head Works Tailhook Mod 1C The Patented Tailhook MOD 1C is 30% lighter and 30% more compact than or standard Mod 1. With a profile similar to the SCW Tailhook it truly is the most compact pistol brace on the market today. At less than an inch thick,...HKP-19655$164.95 -
HK MP5, MP5K Magazine - 30 Round - LEO Marked
H&K Heckler & Koch
$94.95Heckler and Koch HK MP5, MP5K 30 Round Magazine with Reproduction LEO Marking Get the classic LEO-marked look without the cost of rare, surplus mags. Each magazine starts as a factory-fresh German HK 30-round mag and is professionally laser engraved with...HKP-21354-M$94.95 -
HK P9, P9S Recoil Buffer
HKP HK Parts
$19.95HK P9S Recoil Buffer Fits All 9mm & 45 P9 & P9S Models This is a must-have replacement item as the buffer will degrade and fall apart with use and age. Replacing the P9 buffer is the most common wear and replacement part on the P9 series of...HKP-01449$19.95 -
HK P30 Series Light Trigger Return Spring
H&K Heckler & Koch
$7.95Light Trigger Return Spring This spring is a popular choice for those who opt for custom trigger pulls and spring conversions. It's also known as the "light" trigger return spring for the P30 series of pistols. Converts a V2 heavy LEM to a light V1...HKP-01801$7.95