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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Out Of Stock
HK UMP Lower Backplate
H&K Heckler & Koch
$34.95HK Heckler and Koch .40 S&W, .45 ACP, 9mm Lower Backplate for HK UMP HK German Backplate for all UMP lowers. You will need to add your existing buffer or order one to make a complete buffer assembly.HKP-16473$34.95 -
HK UMP Lower - Navy 3 Position 0,1,Full
H&K Heckler & Koch
$1,249.95HK Heckler and Koch 3 Position Navy Lower for HK UMP New German Heckler & Koch UMP 3 position (0, 1, full) Navy lower. Each lower comes complete with all the factory internals. These lowers are ideal...HKP-00592$1,249.95 -
HK21E, HK23E, 11E Locking Piece #9 - 40 Degree
H&K Heckler & Koch
$149.95New HK German #9 Locking Piece The number 9 locking piece is 40 degrees. This will work with both .223 & .308 firearms and for custom builds and applications. This item is no longer available from HK...HKP-00548$149.95 -
On Sale
HK91, G3 Rifle Length Handguard - Keymod
AIM
Now: $80.96Was: $89.95HK 91, G3, PTR RIFLE LENGTH HANDGUARD - KEY MOD This sleek streamlined design is an ultra low profile handguard with generous mounting space to accept all KeyMod accessories. Superior ergonomics and...HKP-18179Now: $80.96Was: $89.95 -
HK MP5 Locking Piece #24 - 90 Degree - Low Impulse - .40 S&W, 10mm - US
RCM
$44.95RCM MP5 40/10 Low Impulse Locking Piece #24 Made out of enhanced material and heat treated to spec. The # 24 is the 90-degree locking piece. This is also the standard non-high impulse ammo locking...HKP-15148$44.95 -
On Sale
HK MP5 Field Cleaning Kit - .40 S&W, 10mm
HKP HK Parts / Heckler & Koch
Now: $71.96Was: $79.95HKP HK Parts and Heckler and Koch Field Cleaning Kit for HK MP5 40,10 This cleaning kit is a genuine HK factory cleaning kit and is recommended by HK for all HK pistol owners.HKP-00340Now: $71.96Was: $79.95 -
HK MP5K, HK90 Series Burst Trigger Sear Complete
H&K Heckler & Koch
$59.95Heckler & Koch's Sear Catch for HK90 Series and HK MP5K - Steel - German For Burst Trigger Packs Compatible With: 0,1,3,F 0,1,2,F 0,1,3HKP-17028$59.95 -
On Sale
HK MP5, AP5 Cocking Handle - BLEMISHED
MKE
Now: $7.46Was: $17.95MKE AP5, HK MP5 Cocking Handle - BLEMISHED MARKINGS ONHKP-99374Now: $7.46Was: $17.95 -
HK VP9SK, P30SK Magazine Floorplate Extension - Locking
H&K Heckler & Koch
$23.00H&K VP9SK/P30SK Magazine Extension Locking Floorplate Secures the extension to the magazine body on P30SK and VP9SK magazine extensions. Compatible With: HK VP9SK/P30SKHKP-21993$23.00 -
HK21 Ammunition Belt with Starter Tab - DM1 - 200 Round
H&K Heckler & Koch
$114.95Heckler and Koch DM1 200 Round Belt with Starter Tab - for HK21 7.62x51/.308 Custom 200 round belt for HK21 and MG3 belt-fed rifles because 50 rounds just aren't enough! Compatible With: HK21HKP-21925$114.95 -
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...HKP-21728$115.00 -
On Sale
HK MP7 Dual Magazine Clamp
HKP HK Parts
Now: $31.84Was: $49.95HKP HK MP7 Dual Magazine Clamp Our MP7 dual mag clamp was designed for quick mag swaps at the range or in the real world. The clamp works with any capacity MP7 magazine. Compatible With:HKP-21597-MNow: $31.84Was: $49.95