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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HK45C, USPC Magazine - 8 Round
H&K Heckler & Koch
$59.95New HK German HK45C & USPC 45 8-Round Magazine HK German 8-round magazine with finger rest. New factory-fresh, hard to find. Compatible With: HK USP 45 CompactHKP-00303-M$59.95 -
On Sale
HK MP5, MP5K Cocking Handle - Extended - Enhanced
HKP HK Parts
Now: $31.97Was: $39.95HKP HK MP5, MP5K Extended Cocking Handle - Enhanced Enhanced extended cocking handle for the MP5 & MP5K style of firearms. Designed to also function with UTG monolithic M-LOK handguards. Made from...HKP-18267Now: $31.97Was: $39.95 -
On Sale
HK UMP, USC Picatinny Rail Set - 4 Piece
HKP HK Parts
Now: $119.96Was: $149.95HK UMP, USC Rail Set Complete A complete set of rails for your HK UMP/USC featuring an extended top rail for mounting your optic of choice. The rails are scratch resistant, class 3 mil-spec hard...HKP-17429Now: $119.96Was: $149.95 -
HK MP5, MP5K Dual Magazine Clamp - 9mm - HKP
HKP HK Parts
$49.95HKP MP5, MP5K, SP5, SP5K 9mm Dual Magazine Clamp HKP dual magazine clamp for twice the rounds exactly where you need them. This is also a great way to swap between two different types of ammo, like...HKP-21667$49.95 -
HK416, MR556 Gas Block Roll Pin
H&K Heckler & Koch
$5.95Heckler and Koch Gas Block Pin for HK416 and MR556 This is the retaining pin for an HK416 gas block.HKP-02534$5.95 -
On Sale
HK416 Magazine - .22LR - Gray
Walther
Now: $28.84Was: $34.95HK, Umarex, Walther, HK416 .22LR Magazine - 30 Round Magazine This is the factory OEM magazine for all of the models listed. Each magazine comes in charcoal gray color.HKP-01749Now: $28.84Was: $34.95 -
Out Of Stock
HK91, G3, PTR 20 Round Magazine
KCI
$28.95HK 91, G3, PTR .308 20 Round All Steel Magazine - KCI Designed to fit your G3, HK91, & PTR style firearms chambered in .308 and 7.62x51. This standard capacity 20-round magazine provides reliable...HKP-19970$28.95 -
On Sale
HK MP5, MP5K Optic Mount - Low Profile
B&T Brugger & Thomet
Now: $101.96Was: $119.95B&T MP5, MP5K - Low Profile Scope Mount B&T low profile scope mount. Specifications: Color: Black Height max: 30.7 mmHKP-16875Now: $101.96Was: $119.95 -
Out Of Stock
HK MP5, MP5K Dual Magazine Clamp - 9mm
H&K Heckler & Koch
$129.95HK German MP5, MP5K, SP5, SP5K 9mm Dual Magazine Clamp Genuine HK dual magazine clamp for twice the rounds exactly where you need them. This is also a great way to swap between two different types...HKP-00083$129.95 -
HK MP5 A3 Telescopic Stock Buffer - USA
$7.74MP5 A3 Retractable Stock "H" Buffer For All HK A3 Retractable Stocks The A3 stock buffer is a high-wear and replacement item that needs replacement when torn, cracked, brittle, discolored, and worn...HKP-14012$7.74 -
HK MP5, HK94 Firing Pin Spring - Enhanced
HKP HK Parts
$4.95MP5 & HK94 Firing Pin Spring - Enhanced The "Enhanced" firing pin spring was analyzed and engineered from scratch with the latest in performance spring technology and an emphasis on reducing stress...HKP-02321$4.95 -
On Sale
HK USP, USPC Laser - Red
HKP HK Parts
Now: $23.96Was: $29.95HKP HK USP/USPC Laser - Red Finally, a laser designed to fit the HK USP & USP Compact Family of firearms without a bulky and expensive adapter. This affordable offering is now available to all HK...HKP-16504Now: $23.96Was: $29.95