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
HK33, HK53, HK93, HK91, G3 Buffer Screw Locking Washer - Zinc Plated
H&K Heckler & Koch
Now: $0.23Was: $0.25HK G3, 91, PTR & HK93, 33, 53 - Locking Washer For Small Buffer Screws New not surplus latest generation of G3, 91, PTR toothed locking washer. Zinc plated (galvanized) as to not corrode or rust like the older style units found on surplus stocks...Now: $0.23Was: $0.25 -
On Sale
HK VP9 Thumb Rest Takedown Lever
Align Tactical
Now: $53.96Was: $59.95Align Tactical HK VP9 Thumb Rest Takedown Lever The Align tactical thumb rest takedown lever integrates an ergonomic ledge for the support hand’s thumb to firmly lock down against, serving as a brake against muzzle flip to provide the fastest...Now: $53.96Was: $59.95 -
On Sale
HK416 Magazine - .22LR - Gray
Walther
Now: $31.46Was: $34.95HK, Umarex, Walther, HK416 .22LR Magazine - 30 Round Magazine This is the factory OEM magazine for all of the models listed. Each magazine comes in charcoal gray color. Compatible With: HK 416 .22 Colt M4 .22 HK G36 .22 Beretta ARX 160 ...Now: $31.46Was: $34.95 -
IMI 32 Round Uzi 9mm Magazine - German Military - Used
IMI
$24.95Uzi 32 Round 9mm Magazine - IMI - Used Good Condition+ Factory Original Israeli IMI all steel production, 32rd 9mm magazines produced for the German army. German mags were military, they were not offered as a commercial magazine. As an added bonus these...$24.95 -
Out Of StockOn Sale
HK MP5, MP5K Handle -Cocking - Extended
HKP HK Parts
Now: $31.96Was: $39.95HK MP5, MP5K Contoured Cocking Handle - Extended Enhanced extended cocking handle for the MP5 style of firearms. Each cocking handle offers twice the grabbing area for charging the firearm and each is made 100% from solid steel billet. Each item also...Now: $31.96Was: $39.95 -
On Sale
HK MP5 Manual - Armorer's - 90 Pages
H&K Heckler & Koch
Now: $17.95Was: $19.95H&K MP5 Armorer's Manual - 90 Pages Table of Contents History of Heckler and Koch General Information Exterior Nomenclature Safety Check / Clearing Procedure Markings on the MP5 Major Variants (Model variants) Operator Use / Field Stripping Care...Now: $17.95Was: $19.95 -
HK91, G3, PTR 20 Round Magazine
KCI
$28.95HK 91, G3, PTR .308 20 Round All Steel Magazine - KCI Designed to fit your G3, HK91, & PTR style firearms chambered in .308 and 7.62x51. This standard capacity 20-round magazine provides reliable and smooth feeding. Constructed of steel with a grey...$28.95 -
On Sale
HK91, G3 Receiver Flat - US Made
PTR
Now: $89.95Was: $99.95HK G3, 91, PTR & CETME Flat - PTR Made by PTR with original HK tooling using factory specifications and a properly stamped receiver. No FFL is required as this is an unfolded flat that ships directly to the customer. This US made receiver flat...Now: $89.95Was: $99.95 -
On Sale
HK MP5K, SP5K, SP89 Folding Stock
B&T Brugger & Thomet
Now: $247.50Was: $275.00B&T Brugger and Thomet HK MP5K, SP5K, SP89 Folding Stock Factory Swiss-made B&T folding stock for MP5K-pattern firearms. This military-grade stock is built to the same specifications B&T supplies to OEM contracts and installs using standard...Now: $247.50Was: $275.00 -
On Sale
HK, Walther, Colt, .22LR O-Ring- Barrel Adapter
USA
Now: $2.66Was: $2.95Heckler and Koch, Walther, Colt, .22LR Barrel Adapter O-Ring Made from the highest quality and very durable Viton material. The O-ring on the adapter tear with use or become brittle over time. Be sure to grab a few extra rings with your adapter to ensure...Now: $2.66Was: $2.95 -
Out Of StockOn Sale
HK MP5, MP5K Dual Magazine Clamp - 9mm - H&K
H&K Heckler & Koch
Now: $98.95Was: $109.95HK German MP5, MP5K, SP5, SP5K 9mm Dual Magazine Clamp Genuine HK dual magazine clamp for twice the rounds exactly where you need them. This is also a great way to swap between two different types of ammo, like FMJ and JHPs or super and subsonic...Now: $98.95Was: $109.95 -
On Sale
HK VP9, VP40 Tactical Magwell - EDC
HKP HK Parts
Now: $47.96Was: $59.95HKP HK VP9 & VP40 EDC Tactical Magwell Our newest and greatest EDC magwell was redesigned for a much faster and reliable mag reloads. With a much greater funneled area it guides you to the correct position every time resulting in a no-look magazine...Now: $47.96Was: $59.95