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 UMP Magazine - 25 Round - LEO Marked - Used
H&K Heckler & Koch
$149.95German HK UMP .45 25 Round Magazine - Used Used PD trade-in factory 25 round magazines with HK factory-marked LEO markings. Condition of used parts will vary. All used parts are sold AS-IS. Compatible With: HK UMP .45 ACPHKP-17917$149.95 -
HK33, HK53, HK93 Trigger Group - 2 Position Housing 0,1 - Safe, Semi Only
HKP HK Parts
$549.95HKP 93, 33, 53 Trigger Group 2 Position Housing 0,1 - Safe, Semi Only Our trigger group offering is the most desirable HK 93,33,53 trigger group available. Now you can upgrade your HK firearm to have the look & feel of the 4 position burst lower with...HKP-17246$549.95 -
Out Of Stock
HK MP5 Locking Roller +2 - .40 S&W, 10mm
H&K Heckler & Koch
$19.99H&K Heckler and Koch +2 Roller for HK MP5 40,10 New HK German MP5 40,10 +2 roller. Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price...HKP-00334$19.99 -
HK MP5K, SP89 Trigger Housing - SEF Navy - Clipped and Pinned
H&K Heckler & Koch
$199.95H&K MP5K/SP89 9mm SEF Navy Style Trigger Housing - Clipped & Pinned Each housing is clipped & pinned for the semi-auto shelf of the HK MP5K builds or SP89 firearms. Specifications: Made In Germany Clipped & Pinned SEF Pictogram...HKP-00407$199.95 -
Adjustable Folding Stock 1/2 inch Spacer
Choate
$7.95Choate Adjustable Folding Stock 1/2 inch Spacer This spacer adds 1/2 inch to our HK Choate folding stocks that uses the adjustable length of pull spacer system. You can add up to 5 of these spacers to your stock.HKP-19032$7.95 -
HK MP5F, MP5 Cocking Tube and Handle - Support Combo - .40 S&W / 10mm
HKP HK Parts
$249.95HKP MP5F & MP5 40,10 Cocking Tube, Handle, Support Combo HK MP5 40/10 or MP5 F factory correct USA made cocking tube and cocking tube support assembly complete. This is a factory correct MP5F/MP5 40/10 Cocking tube assembly complete. This assembly...HKP-18152$249.95 -
HK MP5, AP5 Cocking Handle
MKE
$17.95HK MP5 and AP5 Cocking Handle Factory OEM Replacement Factory OEM replacement AP5 cocking handle as found on MKE/Century AP5 models.Compatible With: HK MP5, MP5K, SP89, MP5SD HK SP5, SP5K, SP5-PDW, SP5L Century AP5, AP5-P, AP5-M In-spec clones...HKP-22475$17.95 -
HK CC9 Extended Base Plate with Finger Rest
HKP HK Parts
$69.95HKP CC9 Extended Base Plate with Finger Rest This extended base plate gives your CC9 magazine the extended look and enhanced grip of a full-capacity mag without adding any rounds. Perfect for restrictive states or anyone wanting a streamlined, tactical...HKP-22275-M$69.95 -
HK VP9SK/P30SK 15 Round Extension
H&K Heckler & Koch
$32.95H&K VP9SK/P30SK 15 Round Extension HK VP9SK 15-round magazine extension made from durable black polymer with stippled texture. Compatible With: HK VP9SK & P30SKHKP-21991$32.95 -
HK MP5K to G3 Stock or Brace Adapter
HKP HK Parts
$113.95HKP HK MP5K to G3 Brace/Stock Adapter The MP5K/G3 adapter enables seamless compatibility between MP5K firearms and G3-style stocks. Designed for a secure and sturdy connection, it's an excellent upgrade for those looking to customize or swap...HKP-21853$113.95 -
HK91, G3 Tactical Handguard - Low Profile
PTR
$109.95PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile Made from aircraft-grade aluminum, rock-solid, and lightweight. This forearm allows you to add up to 3 rails on your firearm. That includes the left, right, as well as bottom sides, with the...HKP-21806-M$109.95 -
HK MP5 Adapter - Folding Stock
B&T Brugger & Thomet
$114.95B&T HK MP5 Adapter for Folding Stock Upgrade your MP5 platform with precision Swiss engineering. The Brügger & Thomet HK MP5 Adapter for Folding Stock is designed to provide a secure and reliable mounting interface for B&T’s...HKP-21751$114.95