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, USC, G36, SL8 Sear - 9mm, .40 S&W, .45 ACP, 5.56 / .223
HKP HK Parts
$49.95Sear For The HK UMP, USC, G36, & SL8 - USA CNC machined from aircraft grade aluminum that is hard coat anodized that will last much longer than the factory HK part that's made with plastic. This part counts as 1 US-made 922r compliant part. 100% USA...HKP-01847$49.95 -
HK UMP Magazine Release Axle
H&K Heckler & Koch
$19.95Heckler and Koch Magazine Release Axle for HK UMP Replacement magazine release axle for HK UMP platforms. This component is commonly replaced due to wear or breakage and may also be required when configuring compliant magazine release systems where...HKP-02159$19.95 -
HK UMP, USC Lower Locking Pin
H&K Heckler & Koch
$36.95HK German UMP Lower Locking Pin For use with all HK UMP lowers and USC to UMP conversions. New HK German manufacture.HKP-00595$36.95 -
HK33, HK53, HK93 Backplate - Parkerized
H&K Heckler & Koch
$64.95Steel Back Plate For HK93, 33, 53 & MP5, 94- Parkerized Finish HK German backplate with the recoil assembly cup guide installed. Each unit comes complete & freshly parkerized. Derived from a German HK91 backplate and using factory tooling,...HKP-16252$64.95 -
HK MP5 SEF Trigger Pack, Complete - Full Auto - .40 S&W, 10mm
H&K Heckler & Koch
$239.95HK German SEF Full Auto Trigger Pack Complete Factory HK German MP5 40 caliber full auto trigger pack is unmodified as it comes from HK. Our F/A trigger pack comes with a used factory German HK 40/10 caliber ejector lever and heavy hammer spring. Each...HKP-00151$239.95 -
HK MP5, HK90 Series Front Sight Post - Night Sight
XS Sights
$92.99XS Sights Night Sight Front Sight Post with the Standard Dot Size This part works wonders in low-light situations and tactical environments. This is simply the best front-sight post you can get for your HK. Because of the reach of the MP5 and...HKP-02066$92.99 -
HK MP5, MP5K 9mm Ambidextrous 0,1 Trigger Pack - Match
HKP HK Parts
$579.95HKP/H&K MP5/K 9mm 2 Position 0,1 Ambidextrous Match Trigger Pack We have one of the best HK gunsmiths in the country that is able to take hand picked German HK F/A trigger packs and modify them to semi-auto. This is done with the best and most...HKP-18424$579.95 -
HK MP5 Selector Lever - Left Side - Extended 4 Position Ambi - ESSL
H&K Heckler & Koch
$299.95HK German Ambidextrous Left Side EXTENDED Safety Selector Lever 4 Position Burst (0,1,3, F) The ESSL will allow the user to have an easier time getting to the selector lever than a standard length lever. Great for those who...HKP-00126$299.95 -
HK91, G3, PTR Magazine - 20 Round - Date Coded - Like New
H&K Heckler & Koch
$34.95Heckler and Koch HK91, G3, PTR 20 Round Date Coded Magazine - Like New Factory German HK 20 round magazine for HK91, G3, and PTR91 pattern rifles. Offered in IB or IC date codes for those seeking original German date coded magazines in like new...HKP-22560-M$34.95 -
HK G36 Picatinny Adapter - Gen 2
HKP HK Parts
$139.95HKP HK G36 Picatinny Adapter - Gen 2 Elevate your G36 with the Gen 2 Picatinny adapter, designed to effortlessly attach any 1913-style stock or brace. Our refined design guarantees a secure attachment for stocks and braces and delivers an adjustable...HKP-21866$139.95 -
HK45 MOD 1 Compensator
HKP HK Parts
$179.95HK Parts MOD 1 Compensator: H&K HK45 The HK Parts MOD 1 compensator strikes a seamless balance of form and function. Users will immediately notice the reduction in muzzle flip and recoil, getting you back on target quicker. Each MOD 1 comp includes...HKP-21222$179.95 -
HK MP5K Bolt Carrier - Semi Auto
RCM
$146.95RCM HK MP5K Semi Auto Carrier MP5K, SP89 semi-auto carrier machined completely from billet ordnance steel. RCM's US made MP5K carrier is made to the most updated and latest MP5K specs and more. Tungsten filled, heat treated, phosphate finish and...HKP-20982$146.95