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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
HKP 9mm Knurled Micro Comp - Threaded 1/2x28 RH
HKP HK Parts
$29.95HKP 9mm Knurled Micro Comp - Threaded 1/2x28 RH The HK Parts Micro Comp & Thread Protector is a sleek, functional solution for enhancing your 9mm pistol's performance. Designed to be lightweight and efficient, this micro compensator easily attaches...HKP-21124$29.95 -
Out Of Stock
HK416, MR556 Buffer Tube Castle Nut - A5 Extended
H&K Heckler & Koch
$75.95Heckler and Koch A5 Factory German Extended Castle Nut for HK416 and HK MR556 Original HK Factory German steel 416 A5 Extended Castle Nut. Perfect for MR556, HK 416 A5 builds, or upgrades.HKP-19164$75.95 -
HK P30SK Slim Short Slide Release Lever Set
H&K Heckler & Koch
$89.95HK P30SK Slim/Short Slide Release Lever - German HK HK manufactured P30SK slimline style slide release set. This set replaces the factory P30SK stock slide release set that comes from the factory. The slim style set is shorter and thinner in design for...HKP-18028$89.95 -
Out Of Stock
HK USPC, P2000SK Magazine - 9mm - 13 Round - Flat Floorplate
H&K Heckler & Koch
$49.9513 Round HK USPC 9mm Magazine w/ Flat Floorplate Perfect for concealed carry or use as a lower profile magazine. Compatible With: HK USP Compact 9mm HK P2000 9mm HK P2000SK (will sit below the bottom of the magwell)HKP-02243$49.95 -
HK416, MR556 Mil-Spec Enhanced Buffer Tube
H&K Heckler & Koch
$254.95HK 416 & MR556 OTB (over the beach) Buffer Tube/Receiver Extension Each mil-spec buffer tube has built-in drainage holes in the rear of the tube and also on the bottom to maximize efficiency. Each buffer tube has ball-bearing rollers to tighten the...HKP-02716$254.95 -
HK UMP Magazine - .40 S&W - 30 Round
HKP HK Parts
$49.95UMP, SMG .40 Cal - 30 Round Magazine Each 30 round magazine will fit all HK UMP .40 caliber carbines, SMG's as well as the USC-UMP .40 caliber conversions. Each magazine features, steel feed lips, enhanced polymer construction and all correct updated...HKP-17583$49.95 -
HK91, G3 Rear Sight Assembly - Used-Excellent
H&K Heckler & Koch
$18.95HK German G3, 91, PTR Rear Sight Assembly - Used Excellent Condition HK German factory sight with rear sigh detent and detent spring installed. These sights are the finest hand-picked, sorted sights available at a fraction of the cost of a new $85 set...HKP-02229$18.95 -
HK MP5, HK33, HK93 A2 Fixed Buttstock - Wood
H&K Heckler & Koch
$399.95HK Heckler and Koch Fixed Wood Stock for HK MP5, HK94, HK93, HK33 Never before has there been a commercially available wooden stock for the HK 93 & MP5 series of firearms. The wood stock is a factory surplus walnut stock integrated with the factory...HKP-16328$399.95 -
Out Of Stock
B&T Ambidextrous Sling Pin- Large
B&T Brugger & Thomet
$57.95B&T Stock Ambidextrous Sling Pin That Replaces The Push Pin For Stock Each ambi sling pin will allow the use of a sling mounting location for either a left or right hand shooter for replacing the rear stock push pin with this ambi sling pin. Each...HKP-16887$57.95 -
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 -
Out Of Stock
HK MP5, HK33, HK53 Trigger Housing - SEF 0,1,30 Pictogram - Push Pin - 9mm
POF
$89.95POF 9mm SEF (0,1,30 Pictogram) Housing - Push Pin for HK MP5 This is a H&K contract SEF grip housing. The Housing features the classic finger grooves. This part is not HK German quality, but a great value for the price. Specifications: Push...HKP-19826$89.95 -
HK416, MR556 Ejection Port Spring
H&K Heckler & Koch
$9.95H&K HK MR556/416 Ejection Port Spring Compatible With: HK MR556 HK 416HKP-02616$9.95