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
B&T Blast Deflector - A2 NATO Interface
B&T Brugger & Thomet
Now: $254.95Was: $300.00B&T Blast Deflector - A2 NATO Interface This blast deflector is designed for NATO style A2 ("birdcage") flash hiders. Offering a universal fit for 5.56 rifles featuring the standard A2 flash hider. It directs muzzle blast forward, preventing...HKP-21777Now: $254.95Was: $300.00 -
Out Of Stock
B&T APC9, TP9, SPC9 Magazine Slim Bumper Upgrade Kit
B&T Brugger & Thomet
$20.00B&TBrugger and Thomet Magazine Slim Bumper Upgrade Kit This magazine upgrade kit enhances the durability of your 9mm magazines, providing extra protection for the base. The kit features a two-piece base plate that reinforces the bottom of the...HKP-21712$20.00 -
On Sale
HK Mark 23 Thread Protector - 16x1 RH - US
HKP HK Parts
Now: $15.95Was: $19.95HKP HK Mark 23 .45 ACP Thread Protector - Threaded 16x1 RH Specifically designed for all H&K Mark 23/SOCOM barrels threaded 16x1 RH, this essential accessory offers superior protection for your threaded barrel. Featuring a durable nitride...HKP-21267Now: $15.95Was: $19.95 -
On Sale
HK MP5K, SP5K Binary Trigger Group - SEF Ambi - BFSIII - 9mm - Contoured
FA Franklin Armory
$1,124.95 - $1,162.95Franklin Armory HK MP5K - BFSIII HK-C1 – Binary Trigger Group – SEF – Contoured In position 3 it will fire 1 round on pull and 1 round on release. With a 4.5 lb trigger pull, making this the fastest semi-automatic trigger on the market...HKP-20005-M$1,124.95 - $1,162.95 -
HK91, G3 Buffer Spring - Surplus
H&K Heckler & Koch
$4.95HK G3, 91 Buffer Spring - Surplus This is the factory buffer spring for the rear stock buffer found on the G3, HK91, 93 A2 style stocks. This is a used excellent shape spring. A great replacement to have on hand for your worn out buffer spring...HKP-20319$4.95 -
HK VP9SK, P30SK Magazine, Complete - 19 Round
HKP HK Parts / Heckler & Koch
$89.9510 Round Magazine with Black +7 Extension - 9mm - HK VP9SK and P30SK Drop-in magazine ready to go! HK Parts takes an existing 10 round magazine a +7 magazine extension and a 17 round mag follower from conversion kits to assemble them into a working 19...HKP-20060$89.95 -
On Sale
Thread Protector - 9mm - 13.5x1 LH - Titanium
HKP HK Parts
Now: $23.95Was: $29.95HKP 9mm Titanium Thread Protector - Threaded 13.5x1 LH This billet-machined titanium thread protector with a DLC finish fits all 13.5x1 LH-threaded barrels. Its unique design covers and protects your barrel's crown. The included O-ring ensures a...HKP-19724Now: $23.95Was: $29.95 -
HK Mark 23, SOCOM Firing Pin Block
H&K Heckler & Koch
$35.95Heckler and Koch Firing Pin Block for Mark 23 and SOCOM This is the real deal and it is plated in nickel and made for the HK Mark 23 and SOCOM models. Compatible With: HK Mark 23 SOCOM ModelsHKP-01579$35.95 -
HK P2000SK Magazine - 9 Round -.357 SIG
H&K Heckler & Koch
$49.00HK P2000 SK .357 SIG 9 Round Magazine New HK German comes just as pictured for the HK P2000 SK. Compatible With: P2000 SK .40 and .357 SigHKP-01021$49.00 -
On Sale
HK USPC HD Night Sight - Yellow, Green
Trijicon
Now: $134.95Was: $159.00Trijicon HK USPC HD Night Sight - Yellow/Green The three-dot green tritium night sight set front sight features a taller blade and an aiming point ringed in photoluminescent paint, while the rear sight is outlined in black and features a wider U-shaped...HKP-14544Now: $134.95Was: $159.00 -
HK USPC Magazine with Extended Floorplate - .357 SIG - 10 Round -
H&K Heckler & Koch
$49.00Heckler and Koch 10 Round .357 Extended Floorplate Magazine for HK USP Compact Will work with .40 cal rounds. Brand new HK German manufactured.HKP-01238$49.00 -
Out Of Stock
HK416, MR556 10.5" Super Modular Rail System
Geissele
$472.00Geissele HK416, MR556 10.5" Modular Rail 9.7 " Extended free float rail for use with all HK 416 & MR 556 barrels. Please note: On the HK416 models the sling attachment point on the gas block will need to be removed to allow the handguard to slide on...HKP-16459$472.00