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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HK33, HK53, HK93, HK91, HK G3 Flash Hider - Threaded 15x1 - Used
H&K Heckler & Koch
$15.95Heckler and Koch's Flash Hider - 15x1 RH - Used Used / surplus HK German flash hider threaded 15x1 RH. Please inspect pictures to ascertain the average condition of these flash hiders. Compatible With: HK33 HK53 HK93 HK G3 HK91HKP-00717$15.95 -
B&T APC, SPC, GHM Super APC Trigger
Geissele
$378.95B&T APC, SPC, GHM Super APC Trigger Geissele limited edition trigger made specially for B&T firearms. The Super APC trigger features the same crisp, single-stage feel and quick reset of the Geissele Super 3-Gun. Trigger pull weight is also...HKP-22416$378.95 -
On Sale
HK416 A1 Upper Receiver - 10.4"
H&K Heckler & Koch
Now: $2,999.95Was: $3,499.95HK416 10.4" Complete Upper Receiver Features: Factory German 10.4" length 2008 date coded P.D. trade-in, de-serialized during the de-milling process. Finish your build with a matching lower from STS Tactical. Compatible With: HK416HKP-22245Now: $2,999.95Was: $3,499.95 -
HK416, MR556 Flash Hider - 3 Prong - Threaded 1/2x28
B&T Brugger & Thomet
$100.00Brugger and Thomet Assault 3 Prong Flash Hider - 1/2x28 3-Prong muzzle device with 1/2x28 threading, designed to reduce muzzle flash and improve shooting performance. Features: High performance open tine hybrid Precision machined, DLC...HKP-22216$100.00 -
Out Of Stock
HK MP5 Recoil Rod Assembly
RCM
$54.95RCM HK MP5 Recoil Rod Assembly The recoil rod and spring assembly is a great item to have on hand for replacement and spares as this is a consumable part. Compatible With: HK MP5 NOT compatible with SP5 with the F-style recoil rod MP5 clones and custom...HKP-22202$54.95 -
HK CC9 Extractor Roll Pin
H&K Heckler & Koch
$5.95H&K CC9 Extractor Roll Pin Made in Germany, the extractor roll pin for the CC9 secures the extractor to the slide. Compatible With: HK CC9HKP-22132$5.95 -
HK CC9 Recoil Spring Assembly
H&K Heckler & Koch
$48.95H&K CC9 Recoil Spring Assembly Made in Germany, the recoil spring assembly for CC9 pistol absorbs slide movement and returns the slide to battery during cycling. Compatible With: HK CC9HKP-22128$48.95 -
On Sale
HK MP5K Barrel - .357 Sig - Threaded 1/2x32 with 3 Lug - Gunsmith Special
USA
Now: $59.95Was: $289.95HK MP5K .357 Sig Barrel - 3 Lug - Threaded 1/2x32 - Gunsmith Special Unfinished US-Made MP5K .357 Sig barrel. Please Note: Will require work before being functional. HKP recommends the work be performed by a professional gunsmith. Condition will...HKP-99177Now: $59.95Was: $289.95 -
On Sale
HK MP5 .22LR Dual Folding Stabilizer w/ Adapter
HKP HK Parts / Strike Industries
$249.95 - $269.95Strike Industries HK MP5 .22LR Dual Folding Stabilizer w/ Adapter The Strike Industries Dual Folding Stabilizer paired with the HKP MP5 .22LR picatinny adapter is one of the best options on the market for those looking for a light, compact folding stock...HKP-21770-M$249.95 - $269.95 -
Out Of Stock
HK417, MR762 Double Magazine Pouch
H&K Heckler & Koch
$129.95H&K HK 417 Double Magazine Pouch Factory HK double magazine pouch for the HK 417 and MR762 platforms chambered in .308/7.62x51. Compatible With: HK 417 MR762HKP-21800$129.95 -
Picatinny Optic Mount - 39mm - Skeleton Mount - Aimpoint ACRO
B&T Brugger & Thomet
$150.00B&T 39mm QD Skeleton Mount for Aimpoint ACRO The B&T QD "Skeleton" mount for Aimpoint® Acro offers a 39mm elevated profile for improved sight alignment, ideal for night vision setups requiring clearance over forward-mounted IR devices. Its...HKP-21730-M$150.00 -
HK MP5 - MBT Stock
B&T Brugger & Thomet
$650.00B&T HK MP5 - MBT Stock B&T MBT folding stock for HK MP5. Polymer stock and adapter. Features: 8 position length adjustment Telescoping cheek riser w/ 3 position height adjustment Folds to the right canted downward 3.5 degrees Locks...HKP-21422$650.00