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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On Sale
Now: $22.91Was: $26.95 -
On Sale
HK UMP, USC Optic Rail - Picatinny
H&K Heckler & Koch
Now: $17.95Was: $19.95HK UMP, USC Optic Rail - Picatinny Factory HK UMP and USC Picatinny machined aluminum optic rail with mounting hardware. Compatible With: HK UMP, USCHKP-22541Now: $17.95Was: $19.95 -
HK CC9 +3 Magazine Extension Kit with Pinky Rest - 9mm
HKP HK Parts
$49.95HKP HK CC9 +3 Magazine Extension +3 magazine extension for the HK CC9. This low-profile base pad increases a standard 12-round CC9 magazine to 15 rounds. Machined in the U.S. from aircraft-grade...HKP-22476-M$49.95 -
Out Of Stock
HK MP5 Barrel Retaining Pin - 5.015mm
H&K Heckler & Koch
$14.95H&K 90 Series Barrel Retaining Pin - 5.015mm Each barrel pin is used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK...HKP-22284$14.95 -
HK VP9 A1, P30 A1 Magazine Floorplate - 9mm - 17 Round
H&K Heckler & Koch
$21.95H&K VP9/P30 A1 17 Round Magazine Floorplate Factory replacement floorplate for VP9 and P30 17-round magazines. Compatible with HK VP9/P30 A1 17 round magazinesHKP-21979$21.95 -
$6.99 -
HK33, HK53, HK93, HK21E, 23E Cocking Handle Pivot Pin
H&K Heckler & Koch
$18.95H&K 93/53/33 & HK21E/23E Cocking Handle Pivot Pin This genuine H&K cocking handle pivot pin allows smooth operation of the charging handle assembly. While the nipple on the 21E pin is slightly...HKP-21746$18.95 -
Out Of Stock
HK91, G3 Barrel - 7.62x51 - 17.7" - Threaded 5/8x24
RCM
$264.99RCM HK G3/91 Threaded Barrel - 5/8x24-CHE Machined by RCM from a Mil-Spec 41V50 Hammer Forged Blank. These blanks are considered to be one of the finest made. 1:10 twist, Nitride finish. Perfect for...HKP-21838$264.99 -
Out Of Stock
B&T APC10, SPC10 Magazine - 30 Round
B&T Brugger & Thomet
$100.00B&T 30 Round APC10/SPC10 Magazine - 10mm Compatible with any G pattern 10mm B&T firearm. Compatible With: B&T APC10 B&HKP-21720$100.00 -
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm- TiN Coated
KCI
$99.95KCI 30 Round HK MP5 9mm Magazine - TiN Coated Elevate your gear with our TiN coated KCI magazines. Each magazine begins as a regular 9mm, 30 round mag that is expertly disassembled, coated with...HKP-21646$99.95 -
On Sale
HK33, HK53, HK93 Dual Magazine Clamp
HKP HK Parts
$39.96 - $49.95HKP HK33, HK53, HK93 Dual Magazine Clamp Securely hold two HK33 magazines together for fast mag swaps. Precision-machined from billet aluminum and anodized in the popular red or classic black. Our...HKP-21608-M$39.96 - $49.95 -
On Sale
HK416, MR556 Extractor Spring Buffer
HKP HK Parts
Now: $3.44Was: $5.39HKP HK MR556/416 Extractor Spring Buffer This buffer fits inside the extractor spring in the extractor pocked of the bolt. This item is a high wear item and a spare would be highly advised...HKP-21604Now: $3.44Was: $5.39