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
HK MP5K Cocking Tube Support - Complete
MKE
Now: $38.46Was: $54.95MKE HK MP5K Cocking Tube Support Complete Complete assembly for proper alignment and reliable operation. Compatible With: Century AP5-P, AP5-M HK MP5K Clones and custom builds (may require slight fitting)HKP-22226Now: $38.46Was: $54.95 -
On Sale
HK VP9, VP40 Competition Magwell Extension - Orange - BLEMISHED
HKP HK Parts
Now: $69.95Was: $129.95HKP HK VP9, VP40 Competition Magwell Extension - Orange - BLEMISHED CONDITION MAY VARY. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Our 2-piece, steel insert...HKP-21079-OR-BNow: $69.95Was: $129.95 -
HK CC9 Firing Pin Disconnect
H&K Heckler & Koch
$5.95H&K CC9 Firing Pin Disconnect OEM firing pin disconnect for the H&K CC9 pistol. Controls firing pin engagement during the firing cycle. Compatible With: HK CC9HKP-22140$5.95 -
HK CC9 Disconnector
H&K Heckler & Koch
$13.95H&K CC9 Disconnector Made by H&K, this CC9 disconnector controls hammer release timing and prevents hammer follow during cycling. Compatible With: HK CC9HKP-22117$13.95 -
On Sale
HK416, MR556 Barrel - 5.56 - 9" - Threaded 1/2"x28 - PDW - A1 and A3
Nefarious Arms
Now: $504.95Was: $594.95Nefarious Arms HK 416C 9" Barrel The Nefarious Arms HK416/MR556 Barrel is built for shooters who demand precision, durability, and consistent performance. Made in the USA from 4150 chromoly steel, cold-hammer-forged, and chrome-lined for enduring...HKP-21906Now: $504.95Was: $594.95 -
On Sale
HK MP5K Stock with Direct Fit Adapter - .40 S&W, 10mm
HKP HK Parts
Now: $231.95Was: $289.95HKP Stock with a Direct Fit Adapter HK MP5K .40 and 10mm Designed to adapt UMP style and B&T folding stocks directly to the .40, 10mm K platform. Made in the USA and available exclusively at HK Parts Compatible With: HK MP5K .40, 10mmHKP-21834Now: $231.95Was: $289.95 -
On Sale
HK416, MR556 Flash Hider - Threaded 1/2x28
B&T Brugger & Thomet
Now: $105.95Was: $125.00B&T Brugger and Thomet's Flash Hider - for 5.56mm NATO caliber weapons threaded 1/2x28 Factory B&T 1/2x28 flash hider for 5.56 rifles. Compatible With: HK 416 HK MR556 HK MR223 B&T APC223 AR-15 M16 5.56 / .223 firearms threaded...HKP-21757Now: $105.95Was: $125.00 -
Out Of Stock
B&T USW-G17 Conversion Kit
B&T Brugger & Thomet
$550.00B&T USW-G17 Conversion Kit Upgrade your Glock 17 with the B&T USW-G17 conversion kit, transforming it into a Universal Service Weapon for enhanced stability and control. This kit includes a folding stock for improved handling, an optics mounting...HKP-21733$550.00 -
On Sale
HK G36 Flash Hider for M.A.R.S QD Suppressor
B&T Brugger & Thomet
Now: $129.95Was: $144.99B&T G36 (5.56/.223) Flash Hider for M.A.R.S QD Suppressor Specifications: Made in Switzerland Threaded 15x1 RH Does not include face shims Compatible With: HK G36 5.56/.223 firearms threaded 15X1 RH Compatible with the Following Suppressors: M.A...HKP-21522Now: $129.95Was: $144.99 -
On Sale
HK MP5 Trigger Pack - Single Stage Semi-Auto - Ambi
HKP HK Parts
Now: $367.95Was: $459.95HKP/H&K MP5 9mm Single Stage Semi-Auto Ambidextrous Trigger Pack This trigger pack starts as a factory F/A trigger pack before being converted into a semi-auto trigger pack and receiving single-stage trigger work. This is the best option for...HKP-21483Now: $367.95Was: $459.95 -
Out Of Stock
HK MP5, HK33, HK91 Take Down Pin - Push Button - Small
KNS Precision
$24.99KNS Precision HK Push Button Take Down Pin - Small .234" This 6mm (.234") diameter take-down pin has a spring-loaded push button. When the button is depressed, the stainless steel keeper detents retract for easy pin removal. The pin is designed to...HKP-21389$24.99 -
On Sale
HK VP9 Holster - Speed Cant Paddle
Comp-Tac
Now: $62.95Was: $69.95Comp-Tac HK VP9 Speed Cant Paddle Holster It's all-Kydex body provides a rigid material that is custom fit to each firearm and maintains its shape even with the pistol un-holstered. The smooth, low friction surface allows for a fast draw and easy...HKP-20010-MNow: $62.95Was: $69.95