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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HK91, G3 Firing Pin Spring
H&K Heckler & Koch
$9.95HK German HK G3, HK91, & PTR Firing Pin Spring This is a common repair and replacement item and is great for spares as this is a common breakage part.HKP-00498$9.95 -
HK UMP, USC Picatinny Rail Screw
$0.75HK UMP/USC (.40 S&W/.45 ACP/9mm) Picatinny Rail Screw Good spares to have on hand as screws can get damaged or lost.HKP-16562$0.75 -
HK USP, USP Tactical Magazine Spring - .45 ACP - 12 Round
H&K Heckler & Koch
$5.95HK Pistol Magazine Spring This is a must-have spare part for all HK pistol owners. HK recommends that for optimum performance, you change out the magazine springs often and swap them regularly when keeping the pistol magazines loaded for long periods...HKP-01426$5.95 -
HK UMP 9mm 30 Round Magazine
HKP HK Parts
$49.95UMP 9mm 30 Round Factory Magazine - USA UMP 30 round magazine for the UMP. Each magazine features enhanced steel feed lips, and a 30 round magazine capacity. Each magazine counts as 3 U.S. Made compliant parts as an added bonus! This is the finest...HKP-17701$49.95 -
HK Trip Lever- Friction - Used - Surplus
H&K Heckler & Koch
$3.74H&K Trip Lever- Friction - Used - Surplus HK German trip lever for HK F/A or registered sear trigger packs in used surplus condition. This is the older friction style trigger pack found on older HK trigger packs and all HK registered sear packs.HKP-17760$3.74 -
HK91, G3, MP5 Pistol Grip
AC-Unity
$9.95AC-Unity HK G3 Pistol Grip Beautifully designed and textured for a great feel and sure grip. Also correct for HK33 or MP5 style weapons using steel trigger housings with buttstocks mounted with steel backplates. Constructed from advanced...HKP-21629$9.95 -
HK P2000SK Magazine Floorplate - 9mm / .40 S&W - 9,10 Round - Low Profile
H&K Heckler & Koch
$24.95New HK German P2000 SK Magazine Flat Floor plate Low profile style without the finger rest and best for concealed carry or a low profile. This is the perfect upgrade for those who want a slim profile and less obtrusive effect when carrying concealed. It...HKP-01676$24.95 -
HK USP45, Mark 23 Magazine, Complete - 22 Round
HKP HK Parts / Heckler & Koch
$149.95HKP and HK .45 ACP 22 Round Complete Magazine for HK Mark 23 and HK USP HK Parts takes an existing 12 round mag the +10 mag extension and assembles them into a working 22 round magazine. This offering is a valuable option for those that need a...HKP-21372-M$149.95 -
Out Of Stock
HK33, HK53, HK93 Magazine - 40 Round - Used
H&K Heckler & Koch
$80.00HK33, HK53, HK93 Magazine - 40 Round - Used - Genuine German HK HK Factory German 40 round surplus magazine. This factory magazine is long since out of production and is made from aluminum, steel and polymer. Used condition. A rare find and only...HKP-19761$80.00 -
HK45, P30, P2000 Backstrap Roll Pin
H&K Heckler & Koch
$5.95HK P30, 45, & P2000 Backstrap Roll Pin This is the commonly replaced roll pin for the rear backstrap that you can swap and change to different sizes. Great spare to have on hand when doing maintenance on your HK pistol. HK suggests...HKP-02274$5.95 -
On Sale
Century Arms AP5 Flash Hider
MKE
Now: $69.95Was: $79.95MKE AP5 Flash Hider - 3-Lug This 3-lug flash hider is perfect for Century Arms AP5. Specifications: Made in Turkey by MKE Tri-lug quick disconnect mounting Compatible With: Century/MKE AP5 & AP5-P MAC5 & MAC 5K NOT compatible with...HKP-21185Now: $69.95Was: $79.95 -
HK MP5, HK33, HK53, HK93 Housing - SEF Navy Style - Polymer - Push Pin - 9mm, 5.56 / .223 - USED
H&K Heckler & Koch
$64.95H&K Heckler and Koch USED SEF Navy Style Polymer Housing Push Pin for HK MP5, HK33, HK53, HK93 9mm and 5.56 / .223 With the availability of available grip frames being hard to find these days. HK Parts has another offering that will not break the...HKP-19802$64.95