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 G36, 36K Folding Stock - Full Size
H&K Heckler & Koch
$89.95HK G36 or G36K Folding Stock HK G36 Stock complete for full-size G36 rifles. This is the longest stock available for G36 rifles. This is also the standard G36 and G36K stock with the standard length. Compatible With: G36 G36K G36C G36E SL8 to G36...HKP-00277$89.95 -
HK416, MR556, MR762, G36 Extractor Spring
H&K Heckler & Koch
$8.95H&K MR556/MR762/416/G36 (5.56/.223) & (7.62x51/.308) Extractor Spring A must-have replacement wear part and a great item to have on hand. Compatible With: HK G36 HK G36K HK G36C HK SL8 HK MR556 HK 416 HK MR762HKP-00288$8.95 -
On Sale
HK91, G3 Magazine Loader
Maglula
Now: $24.95Was: $29.95HK91, G3, PTR .308 LULA Mag Loader For those that have used Maglula products they offer the best mag loaders on the planet. Features: Loads a round a second, can unload the entire 20 round magazine in less than 3 seconds Safe on fingers and magazine...HKP-16228Now: $24.95Was: $29.95 -
On Sale
HK VP40 Compensator- Rail Mount - Gen 2
HKP HK Parts
Now: $99.95Was: $169.95HKP HK VP40 Gen 2 Rail Mount Compensator Specifications: Length: 4 1/4 inches Height: 2 1/2 inches Weight: 5 oz Torque: Bottom Screws - 26 inch-lbs Side Screws - 18 inch-lbs Should NOT be used with a Threaded Barrel It is recommended by...HKP-19170Now: $99.95Was: $169.95 -
HK P30, P30S Tactical Barrel - 9mm - 4.48" - Threaded 13.5x1 LH
H&K Heckler & Koch
$299.99H&K P30/P30S 9mm Tactical Barrel - Threaded 13.5x1 LH New factory OEM German barrel mande at the HK factory from HK German Cold Hammer Forged barrel blanks, heat treated and finished to HK specs. This is the finest threaded barrel available for the...HKP-16851$299.99 -
On Sale
HK UMP Magazine - 25 Round - .40 S&W - FDE
HKP HK Parts
Now: $24.95Was: $49.95HKP 25 Round Magazine - FDE for HK UMP THIS SHADE OF FDE HAS BEEN DISCONTINUED. STOCK UP AT HALF PRICE BEFORE THEY ARE SOLD OUT FOR GOOD. Made from advanced polymer material with steel feed lips just like the German UMP 40 magazine at a...HKP-20519Now: $24.95Was: $49.95 -
HK33, HK93, HK51, HK91, G3 Paddle Magazine Release - Standard
H&K Heckler & Koch
$8.95New Heckler and Koch Paddle Magazine Release This item is a brand new HK German genuine part, not a used or surplus part. It's used for installation on all HK .223 and .308 rifles. Compatible With: HK91, G3 HK 51 HK33, HK93 PSG1, MSG90HKP-01851$8.95 -
HK MP5 Folding Stock - .22LR - UMP Style
HKP HK Parts / Heckler & Koch
$249.95HKP HK Parts and Heckler and Koch UMP Style Folding Stock with HK Parts Stock Adapter for MP5 .22LR New complete MP5 .22lr folding stock with UMP style stock section. Each stock uses a UMP style stock for a longer length of pull and a includes a new CNC...HKP-20167$249.95 -
Out Of Stock
HK416, MR556 Barrel Nut Installation and Removal Tool
HKP HK Parts
$59.95HK 416, MR556 Barrel Nut Installation & Removal Tool New US manufactured barrel nut removal and installation tool. Each tool has the provision installed to allow the use of an off the shelf 1/2" torque wrench to be used while removing and installing...HKP-17327$59.95 -
HK MP5, HK33, HK53, HK93, HK91, G3 Trigger Housing - SEF - Clipped and Pinned - 9mm, 5.56 / .223, 7.62 / .308 - Excellent
H&K Heckler & Koch
$149.95H&K MP5, 93/53/33, G3/91 (9mm, 5.56/.223, 7.62/.308) SEF Trigger Housing - Clipped & Pinned - Excellent In excellent shape! Most have never been on a firearm. They may have storage and handling marks on the polymer housing. Specifications: Made...HKP-19913$149.95 -
HK USP Firing Pin - New Style
H&K Heckler & Koch
$79.95HK USP New Style Firing Pin A must-have spare and replacement part for your HK pistol, as the firing pin is one of the most important spare parts to have on hand. Brand new HK German manufactured. Compatible with: HK USP 9mm HK USP 40 Cal HK USP .45 All...HKP-01565$79.95 -
On Sale
HK VP9, P30, HK45 Holster for Lights and Lasers - L Line
Comp-Tac
$67.95 - $72.95Comp-Tac L Line Holster for Lights and Lasers for HK VP9, HK P30 and HK45 The L Line Holster OWB- A Multi-Fit Solution for Firearms with Light or Laser Attachments Features: Modular design allows one holster to be used with multiple firearms and lights,...HKP-18825-M$67.95 - $72.95