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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B&T APC9, APC45 Jet Funnel
B&T Brugger & Thomet
$75.00Brugger and Thomet 9mm, APC .45 Jet Funnel for B&T APC Swiss B&T manufactured Jet funnel for the APC 9mm and .45 Cal models.HKP-18034$75.00 -
HK P Series LEM Hammer
H&K Heckler & Koch
$65.95H&K HK P Series LEM Hammer Factory HK German hammer. Compatible With: HK P30 P30LHKP-15436$65.95 -
Out Of Stock
HK USP .45 ACP Complete Slide
H&K Heckler & Koch
$499.95H&K HK USP .45 ACP Complete Slide HK factory date coded, un-serialized & German manufactured. These slides are and hard to find. Includes: Complete SlideHKP-16723$499.95 -
On Sale
HK416, MR556 Flash Hider - 3-Prong - 1/2x28
Surefire
Now: $152.06Was: $168.95Surefire (5.56/.223) 3-Prong Flash Hider - Threaded 1/2x28 The flash hider is engineered for M4/M16 and variants with 1/2x28 muzzle threads. Its patent-pending design reduces muzzle flash by over 99%...HKP-17261Now: $152.06Was: $168.95 -
On Sale
HK G36, SL8 Ejector Spring
USA
Now: $17.96Was: $19.95HK G36 & SL8 Series Of Ejector Spring. Great item to have on hand as this is prone to wear and breakage- US.HKP-18374Now: $17.96Was: $19.95 -
On Sale
HK UMP Gunsmithing Bench Mat
HKP HK Parts
Now: $17.47Was: $24.95HK UMP, USC Bench Mat, Gunsmithing Mat Our HK USC and HK UMP bench mat is the perfect cleaning and repair mat designed specifically for your Heckler and Koch models. Have fun and learn while you work...hkp-17617Now: $17.47Was: $24.95 -
HK UMP Extractor - 9mm
H&K Heckler & Koch
$60.95New HK German USC/UMP 9mm Extractor This is the perfect spare part to have for your UMP or USC 9mm conversion. Hard to find and only available here at HKPARTS.HKP-00266$60.95 -
HK91, G3 Magazine Catch
H&K Heckler & Koch
$19.95Heckler and Koch Magazine Catch for HK G3 and HK91 High-quality HK German production units are brand-new. These also have the proper newer style cut in them and round shafts. Compatible With: <HKP-02073$19.95 -
HK MP5, SP5K Muzzle Brake - 3 Lug - 9mm - Titanium
HKP HK Parts
$104.95HK Parts Titanium Muzzle Brake for 9mm, 3- Lug Barrels US for HK MP5 and HK MP5K Easily attaches to the end of any factory specification 9mm 3 lugged barrel. This muzzle brake doesn't require the of...HKP-18854$104.95 -
On Sale
HK MP5, AP5 Cocking Handle
MKE
Now: $14.36Was: $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,HKP-22475Now: $14.36Was: $17.95 -
HK21 Ammunition Belt with Starter Tab - DM1 - 50 Round
H&K Heckler & Koch
$39.95H&K HK21 DM1 50 Round Belt with Starter Tab - 7.62x51/.308 Custom 50 round belt for HK21 and MG3 belt-fed rifles. Compatible With: HK21HKP-22098$39.95 -
On Sale
HK MP5 Receiver Flat - Smooth Top
HKP HK Parts
Now: $88.17Was: $125.95HKP HK MP5 Receiver Flat - Smooth Top The MP5 receiver flat has been meticulously crafted by the original German tool and die maker of the LSC receiver flat, utilizing factory original German prints...HKP-21552Now: $88.17Was: $125.95