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 MP5, MP5K, SP5, SP5K Magazine Catch - 9mm
MKE
Now: $21.95Was: $26.95HK Magazine Catch High-quality magazine catch manufactured by MKE, built to the latest style for improved reliability on factory and clone firearms. Machined from a single piece of steel for increased durability and smoother, more consistent mag...HKP-22549Now: $21.95Was: $26.95 -
On Sale
HK VP9 Optic Plate #12 - Aimpoint ACRO P-1 Only - Red Dot Pistol Mount
Other
Now: $39.95Was: $59.95HK VP9 Optics Plate #12 - ACRO P-1 Optic Mount The all-steel mounting solution for your HK VP9 Series Optic Ready model. Each plate is CNC machined from a solid billet of ordnance-grade steel, deburred, tumbled, and Cerakoted for the ultimate in...HKP-99339Now: $39.95Was: $59.95 -
On Sale
HK416, MR556 Flash Hider - ROTEX IIA - Threaded M15x1
B&T Brugger & Thomet
Now: $107.95Was: $119.95B&T Brugger and Thomet's Flash Hider for your HK416, HK33, HK53, and HK93. Swiss-made B&T flash hider for all 5.56 / .223 firearms threaded in M15x1. Features a precision machined interface for Rotex IIA and Surefire suppressors. Compatible...HKP-22215Now: $107.95Was: $119.95 -
Out Of Stock
HK416 Folding Front Sight - Complete
H&K Heckler & Koch
$187.95H&K 416 Folding Front Sight - Complete Factory H&K folding front sight for the HK416 with a 33mm sighting line. Compatible With: HK MR556 HK416HKP-22022$187.95 -
HK MR556 A4 Handguard - 10"
H&K Heckler & Koch
$259.95H&K HK MR556 A4 10" Handguard This 10" factory H&K MR556 A4 handguard offers a lightweight, free-floating design that enhances accuracy and provides rock-solid mounting for accessories. Made from high-strength aluminum, it features a slim profile...HKP-21934$259.95 -
On Sale
HK21E Starter Tab with 50 DM6 / M13 Links - .308 / 7.62x51
Now: $20.95Was: $24.95HK21E Starter Tab with 50 DM6/M13 Links Set includes one HK 21E correct M13 starter tab and 50 DM6/M13 disintegrating metal links. Compatible With: HK21E NOT compatible with HK21 and FMP HK21. Those feed mechanism require DM1 links...HKP-21904Now: $20.95Was: $24.95 -
On Sale
HK91, G3, PTR Bolt Head Complete - Used
H&K Heckler & Koch
Now: $78.95Was: $99.95German HK G3 & HK 91 & PTR Bolt Head Complete - Used German Date Coded Made in Germany. Each used bolt head is complete with all parts installed & 100% functional. Taken from live demilled German HK G3 rifles. Each bolt head is in good shape...HKP-21902Now: $78.95Was: $99.95 -
Out Of StockOn Sale
HK USP Conversion Barrel - .40 S&W to 9mm - Threaded - 13.5x1
RCM
Now: $192.95Was: $214.95RCM HK USP .40 to 9mm Conversion Barrel - Threaded - 13.5x1 This 9mm conversion barrel is a drop-in replacement that allows your USP to shoot the ubiquotous 9mm cartridge.Includes a thread protector. Each barrel is made from ordnance-grade steel,...HKP-21789Now: $192.95Was: $214.95 -
Out Of Stock
HK P30L Conversion Barrel - .40 S&W to 9mm - Threaded 1/2x28
RCM
$214.95RCM HK P30L .40 to 9mm Conversion Barrel - Threaded - 1/2x28 This 9mm conversion barrel is a drop-in replacement that allows your P30L to shoot the ubiquitous 9mm cartridge. The conversion barrel features a standard 1/2x28 thread pitch and includes...HKP-21785$214.95 -
Out Of Stock
B&T APC223, APC300 Buttplate - Telescopic Stock
B&T Brugger & Thomet
$136.00B&T Telescopic Stock Buttplate - Brace Conversion Factory B&T replacement buttplate for B&T APC rifle caliber telescoping stocks. Can also be used to upgrade a B&T brace to a stock. Compatible With: B&T...HKP-21753$136.00 -
Out Of Stock
B&T SPC9, SPC10, SPC45 Stock Conversion Kit, Complete
B&T Brugger & Thomet
$165.00Brugger and Thomet Complete Stock Conversion Kit for B&T SPC9, SPC10, SPC45 Factory B&T kit to convert the B&T retractable brace to a retractable stock configuration. Includes: Buttplate Limiter Screws Compatible With: B&T...HKP-21731$165.00 -
Out Of Stock
Picatinny Optic Mount - Low Profile - ACRO, NANO
B&T Brugger & Thomet
$115.00B&T Brugger and Thomet Aimpoint ACRO / NANO 22mm Low Mount The B&T ACRO NANO optic mount is a universal QD mount for any firearm featuring a Picatinny top rail. Keep your optic profile compact with this Swiss made mount. Compatible...HKP-21728$115.00