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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HK91, G3 Buttstock, Grip, Handguard Set - Jungle Green - Surplus
H&K Heckler & Koch
$26.95Original German Army Used Surplus G3, 91, PTR Tropical/Jungle Green Stock Set Factory HK German production. Each stock set is used but in perfect working order. Each set is in overall good condition. Most will clean up nicely with a little TLC. A...HKP-16331$26.95 -
HK MP5, MP5K Magazine Locking Plate - 9mm
H&K Heckler & Koch
$16.95HK MP5 & MP5K Magazine Locking Plate - German New steel HK German manufactured MP5, MP5K curved magazine locking plate for the magazine. Compatible With: 40-round magazine 9mm 30-round magazine 9mm 20-round magazine 9mm 15-round magazine...HKP-01490$16.95 -
HK MP5, SP5K Extractor Spring - 9mm
MKE
$6.95MKE HK MP5, MP5K - Extractor Spring - 9mm Extractor spring for all 9mm HK variants including clones. This spring is the #1 repair & replacement item for the MP5 and MP5K family of firearms. Compatible With: HK MP5 HK MP5K HK SP5 HK SP5K HK94 HK...HKP-22481$6.95 -
HKP 9mm Knurled Micro Comp - Threaded 1/2x28 RH
HKP HK Parts
$29.95HKP 9mm Knurled Micro Comp - Threaded 1/2x28 RH The HK Parts Micro Comp & Thread Protector is a sleek, functional solution for enhancing your 9mm pistol's performance. Designed to be lightweight and efficient, this micro compensator easily attaches...HKP-21124$29.95 -
On Sale
Sig Sauer P320 M17 Compensator
HKP HK Parts
Now: $119.95Was: $189.95HKP SIG P320 M17 Compensator Our P320 M17 compensator reduces recoil and muzzle flip. Each unit is 100% US-made and finished in durable black cerakote. Our M17 compensator features a Picatinny rail to mount lights and lasers. Compatible With: SIG...HKP-21123Now: $119.95Was: $189.95 -
HK VP9, P30 Magazine Extension Kit - +7
HKP HK Parts
$54.95HKP +7 HK VP9/P30 Magazine Extension Kit The HK Parts +7 magazine extension kit adds 7 additional rounds to the HK VP9/P30 magazine with the simple swap of the floor plate & mag spring. Each kit includes the +7 extension and an enhanced spring. This...HKP-19456-M$54.95 -
Out Of Stock
HK33, HK53, HK93, HK91, G3 Central Stock Section With Butt Pad
PTR
$99.95U.S. HK 91, G3, PTR Central Stock Section Black With Butt Pad Compliant parts are hard to find and are important for keeping your HK G3, HK 91, HK33, and 93 build 922r compliant. Compatible With: HK G3, 91, PTR CETME HK 93, 33, 53 Other...HKP-00379$99.95 -
HKP 9mm Birdcage Style Flash Hider - Threaded 1/2x28
HKP HK Parts
$24.95HKP 9mm Birdcage Style Flash Hider - Threaded 1/2x28 Compatible with all 1/2x28 barrels up to 9mm in caliber for the opening of the hole diameter. Perfect for that HK build or other style firearm where you want the look and feel of the iconic HK...HKP-17627$24.95 -
On Sale
HK33, HK53, HK93 Backplate - Painted - BLEMISHED
H&K Heckler & Koch
Now: $39.95Was: $59.95H&K 93/53/33 (5.56/.223) Backplate - Painted - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK German backplate with the recoil assembly cup...HKP-16254-BNow: $39.95Was: $59.95 -
HK33, HK93, HK91, G3 Triple Frame Front Sight Tower - Sight Blade
H&K Heckler & Koch
$14.95HK German Front Sight Tower Triple Frame- Used Surplus Used G3 triple frame in Good shape. Just needs a good refinishing. Comes complete with sight blade and roll pin installed. Used surplus pulled from HK German demilled G3's Comaptible With: HK 91 HK...HKP-16734$14.95 -
HK Spring - Bent Elbow with Roller - Semi - Trigger, Sear Pack
H&K Heckler & Koch
$29.95H&K Heckler and Koch Semi Trigger Pack Or Sear Pack Elbow Spring W/ Roller Each spring is a great replacement for the converted packs that have bent elbow springs or for those that used the original F/A elbow springs that were bent to shape and are...HKP-00070$29.95 -
Out Of Stock
HK MP5SD Barrel - 9mm - 5.75" - Threaded 18x1 RH
B&T Brugger & Thomet
$449.95B&T HK MP5SD 9mm Barrel - Threaded 18x1 RH New from B&T Switzerland, this cold hammer forged (CHF), ported, and nitrided barrel is designed to meet factory HK specifications exclusively for MP5SD models. With a long-standing relationship with...HKP-17957$449.95