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 P30SK 9mm Complete Recoil Spring Assembly
H&K Heckler & Koch
$64.95HK P30SK 9mm Complete Recoil Spring Guide Rod Assembly Brand new HK German manufacture. Compatible With: P30SK 9mmHKP-17938$64.95 -
HK45C, USPC Magazine Floorplate - .45 ACP - 8 Round - Rubberized
H&K Heckler & Koch
$19.95H&K 8 Round HK USPC/45C 45 Magazine Floorplate This item is the new rubberized version, built to reduce breakage when dropped. Compatible With: HK45C 8 RoundsHKP-02212$19.95 -
Out Of Stock
HK91, G3, PTR Training Bolt Group, Complete - Full Auto
H&K Heckler & Koch
$0.00Heckler and Koch F/A Complete Training Bolt Group for HK91, G3, and PTRHKP-18265$0.00 -
Out Of Stock
HK416, MR556 Handguard - 9.75" Quad Rail - RAL8000 - Picatinny
H&K Heckler & Koch
$497.95H&K HK MR556/416 Handguard Picatinny Quad Rail - 9.75" - RAL 8K Handguard with Picatinny quad rail profile on 3, 6 and 9 o'clock, STANAG 4694 profile on 12 o'clock. New HK German. Compatible With:HKP-18553$497.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Front Folding Sight - 28mm
H&K Heckler & Koch
$209.95Heckler and Koch's 28mm Front Folding Sight for HK416, MR556, HK417, MR762HKP-00026$209.95 -
HK UMP, USC, G36, SL8 Sear
H&K Heckler & Koch
$29.95HK Complete Sear G36, UMP, USC & SL8 Genuine German Heckler & Koch part. Compatible With: HK UMPHKP-01850$29.95 -
HK UMP Magazine Floorplate
H&K Heckler & Koch
$9.95HK Heckler and Koch German Magazine Floorplate for All HK UMP Magazines Compatible With: UMP .45 UMP .40 UMP 9mmHKP-16493$9.95 -
On Sale
HK91, G3, PTR Magazine - 20 Round - Steel - USED
Rheinmetall
Now: $18.71Was: $34.95Rheinmetall HK91, G3, PTR Magazine - 20 Round - Steel - USED VARYING CONDITION SHOWN - SOLD INDIVIDUALLY DENTS AND PITTING <HKP-22495-USEDNow: $18.71Was: $34.95 -
On Sale
HK MP5 Locking Piece - 100 Degree - Sold As Is - Gunsmith Special
USA
Now: $7.46Was: $33.95HK MP5 100 Degree Locking Piece - Sold As Is - Gunsmith Special This US-made MP5 100 degree locking piece is the correct locking piece for all HK MP5-style forearms. This locking piece has also now...HKP-99117Now: $7.46Was: $33.95 -
HK USP Compensator for Threaded Barrel - 9mm, .40 S&W
HKP HK Parts
$199.95HKP HK Parts Compensator for Threaded Barrel for HK USP 9/40 The HK Parts USP 9/40 compensator will add a sleek and tactical look to your USP. With the quick and easy addition of our compensator you...HKP-20820$199.95 -
HK UMP 30 Round .40 Magazine - LEO Marked
H&K Heckler & Koch
$64.9530 Round Magazine - LEO Marked - Used - UMP .40 S/W Each 30 round magazine will fit all HK UMP .40 caliber carbines, SMG's as well as the USC-UMP .40 caliber conversions. Used in good condition. The...HKP-20651$64.95 -
HK VP40 Conversion Barrel - .40 S&W to .357 SIG - Non-Threaded
RCM
$237.50RCM HK VP40 .40 S&W To .357 SIG Conversion Barrel - Non-ThreadedHKP-17373$237.50