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 USP Tactical Barrel - .40 S&W - 4.86" - Threaded 14.5x1 LH
RCM
$225.00RCM HK USP .40 S&W Tactical Barrel - Threaded 14.5x1 LH Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest replacement barrel for the HK USP full-size .40...HKP-17745$225.00 -
Out Of Stock
HK45C Tactical Barrel - .45 ACP - 4.57" - Threaded .578x28 RH
RCM
$250.00RCM HK 45C .45 ACP Tactical Barrel -Threaded .578x28 RH This HK45C & HK45C Tactical threaded barrel is designed for compatibility with a wide range of flash hiders and sound suppressors. Unlike the factory HK45C Tactical barrel with 16x1 LH...HKP-17449$250.00 -
On Sale
HK Mark 23 Barrel - .45 ACP - 6.02" - Non-Threaded
RCM
Now: $224.95Was: $250.00RCM HK Mark 23 .45 ACP Barrel - Non-Threaded Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished inside and out with an ultra-desirable nitride coating. This is the finest replacement barrel available for the HK Mark...HKP-16561Now: $224.95Was: $250.00 -
Out Of StockOn Sale
HK USP, USP Tactical Barrel - 9mm - 4.86" - Threaded 13.5x1 LH
RCM
Now: $180.00Was: $225.00RCM HK USP 9mm Tactical Barrel - Threaded 13.5x1 LH Each barrel is finely and painstakingly made from ordnance grade steel, heat treated and finished inside and out in the ultra-desirable nitride finish. This is the finest replacement barrel available...HKP-16706Now: $180.00Was: $225.00 -
Out Of Stock
HK USP Light and Laser Combo - TLR-4 - Red
Streamlight
$229.95Streamlight TLR-4 Light and Laser - Red for HK USP Features: White LED with Red Laser Ambidextrous momentary/steady On-Off switch One-handed snap-on and tighten interface keeps hands away from the muzzle when attaching/detaching Securely fits a broad...HKP-16916$229.95 -
HK G3 Parts Kit
H&K Heckler & Koch
$397.95HK German G3 .308/7.62 X 51mm Surplus Parts Kit Each parts kit comes with all parts from a functional HK G3 full auto rifle that was demilled into a parts kit except for the barrel and receiver. Each part of the parts kit will vary from fair to excellent...HKP-00827$397.95 -
On Sale
HK MP5K, SP89, SP5K Cocking Tube Support - 9mm
HKP HK Parts
Now: $39.95Was: $49.95MP5K, SP89 & SP5K Cocking Tube Support Complete - USA The cocking tube support is the same for the HK SP-89, MP5K & SP5K. Each support is complete with detent and spring installed. These can also be used to replace the plastic or cheaply made...HKP-18103Now: $39.95Was: $49.95 -
Surefire ST Mounting Plate - Tape Switch - M-LOK
Magpul
$14.95Magpul M-Lok Tape Switch - Surefire ST The M-LOK tape switch mounting plate is designed to attach surefire ST pressure pads on M-LOK compatible systems. It is molded of the same high quality polymer as other Magpul products, combining light weight with...HKP-21480$14.95 -
On Sale
HK416, MR556 Flash Hider - A5 4-Prong Style - Threaded 1/2x28
HKP HK Parts
Now: $34.95Was: $39.95HKP (5.56x.223) A5 4 Prong Flash Hider - Threaded 1/2x28 Made from ordnance grade steel, heat treated, and nitrided for longevity. Machined correctly to reduce tuning fork noise. Counts as one US made compliant part. Available exclusively at HK Parts...HKP-21275Now: $34.95Was: $39.95 -
On Sale
HK P2000SK Holster - DCH Comp Carry
Comp-Tac
$55.95 - $58.95Comp-Tac HK P2000SK DCH Comp Carry Holster The holster offers both inside-the-waistband and outside-the-waistband options, allowing the user to carry for their mission. The Dual Concealment Holster comes shipped with both IWB and OWB options, with a...HKP-21120-M$55.95 - $58.95 -
On Sale
HK MP5K Bolt Carrier - Semi Auto
RCM
Now: $123.95Was: $146.95RCM HK MP5K Semi Auto Carrier MP5K, SP89 semi-auto carrier machined completely from billet ordnance steel. RCM's US made MP5K carrier is made to the most updated and latest MP5K specs and more. Tungsten filled, heat treated, phosphate finish and...HKP-20982Now: $123.95Was: $146.95 -
On Sale
HK VP9SK Magazine Locking Plate - 12 Round
Now: $5.95Was: $7.95H&K HK VP9SK Locking Plate for 12 Round Magazine New HK German factory part. This is the locking plate for the bottom of the magazine spring on the newer VP9SK 12 Round magazine. Great spares to have on hand to keep your magazines in tip top shape!HKP-20898Now: $5.95Was: $7.95