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, HK90 Series Roller Locking Plate - Original Style
H&K Heckler & Koch
$43.95New HK German Roller Retainer Plate for Rollers Original-style roller locking plate. This item is a common wear item that is great to have on hand as they are one of the top items that break or fail...HKP-00065$43.95 -
HK45 Magazine - 17 Round
HKP HK Parts / Heckler & Koch
$119.95HKP - 17 Round HK45 Magazine HK45 & HK45 tactical +7 magazine extension coupled with a new HK German 10 round HK45 magazine. Each unit is then fully assembled as a 17 round HK45, HK45 tactical...HKP-20787$119.95 -
HK416, MR556, HK417, MR762 Handguard Locking Screw - Stainless
HKP HK Parts
$9.95HKP HK Parts Handguard Locking Screw - Stainless for HK416, HK MR556, HK417, and HK MR762 Replacement handguard locking screw that secures the handguard to the upper receiver. Made in USA from 17-4...HKP-17657$9.95 -
JMAC Universal HRD M-LOK Handstop
JMAC Customs
$49.95JMAC Custom HRD M-LOK Handstop (H)and(R)etention(D)evice Compact, lightweight, and reversible. Features: M-LOK CompatibleHKP-21235$49.95 -
HK VP9SK, P30SK Magazine Extension - Pinky Rest - +1
HKP HK Parts
$19.95HKP +1 HK VP9SK/P30SK Magazine Extension w/ Pinky Rest VP9 SK & P30 SK magazine extension or floorplate that adds an additional round to the 10 round magazine (11 rounds total). The mag extension...HKP-17880$19.95 -
HK Roller Sear For SEF, Navy Trigger Packs
H&K Heckler & Koch
$29.95H&K Roller Sear For SEF & Navy Trigger Packs It is the newer style, not the older friction type of sear. This item is also referred to as the catch with a roller but is more commonly called a sear.HKP-01710$29.95 -
HK45 Tactical Magazine Extension - +3
HKP HK Parts
$49.95HKP HK Parts +3 Magazine Extension for HK45 and HK45 Tactical HK45 & HK45 Tactical +3 magazine extension adds three additional rounds to the 10 round factory HK45, HK45 Tactical magazine. Made in...HKP-18385-M$49.95 -
HK MP5, HK90 Series Trigger - SEF, 0,1 - Billeted - USA
HKP HK Parts
$45.95HKP HK Parts USA made Billeted Trigger for the HK MP5 and HK90 Series HKP US 90 Series trigger made from the best quality billet steel. It will fit all 0,1, and SEF-style trigger packs. Each part...HKP-00380$45.95 -
HK Standard Roller 8.00mm - Used
H&K Heckler & Koch
$7.958.00mm Standard Size (zero or unmarked) For HK Roller Lock Bolt Head HK spec unmarked 8.00mm roller that will fit all HK bolt heads including HK91/G3, HK93/33/53, HK94, MP5, SP89 all clones and the...HKP-19374$7.95 -
Out Of Stock
HK G36 Magazine - 30 Round - New Version
H&K Heckler & Koch
$69.95Heckler and Koch 30 Round Magazine without Interlocking Retainers for HK G36 Genuine H&K 30-round magazine. This is the new version from HK that does not have the interlocking side retainers that...HKP-22195$69.95 -
HK VP9SK Tactical Barrel - 9mm - Threaded 1/2x28
RCM
$225.00RCM HK VP9SK 9mm Tactical Barrel - Threaded 1/2x28HKP-19258$225.00 -
HK MP5, SP5K Optic Mount - Trijicon RMR - 3.25 MOA
Trijicon
$624.95RMR Optic Mount - Bundle - HK MP5 Includes: (1) Trijicon RMR Type 2 Red Dot Sight - 3.25 MOA Red Dot, LED Illuminated (1) MP5 RMR Optic MountHKP-20732$624.95