All Parts
At HK PARTS, we bring you a wide array of high-quality H&K accessories and components for your favorite firearms. Whether you're upgrading your H&K pistol or rifle, or even looking for parts kits, we've got you covered. Discover a range of top-rated components for popular models like VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, we have it all. Enhance your firearm's performance and functionality with our premium components.
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HK 417 German Parts Kit w/ 12" Barrel
H&K Heckler & Koch
$26,000.00HK German 417 Assaulter 12" Parts Kit - Unfired The ultimate HK unicorn. Have you ever seen one let along seen a brand new German UNFIRED HK417 Assaulter parts kit with EVERY single part with the exception of the stripped lower? This is the ultimate HK...HKP-18433$26,000.00 -
Out Of Stock
HK German Vertical Foregrip - Black
H&K Heckler & Koch
$96.95HK German Picatinny Vertical Foregrip - Black (With slide in for LM/LLM Switch) Compatible With: MP5, MP5K MP5SD MP7A2 G36, G36K, G36C HK 416 HK417 All firearms featuring a Picatinny railHKP-20518$96.95 -
HK MP5/K & UMP .40 S&W 3-Lug Barrel Thread Protector - Threaded 9/16x24
$299.95HK MP5/K & UMP .40 S&W 3-Lug Barrel Thread Protector - Threaded 9/16x24 This is 3-lugged Barrel with a 9/16x24 thread protector. It is rare hard to find, there are only a few available. Specifications: 3-Lugged Barrel Includes Thread Protector...HKP-02318$299.95 -
$14.95 -
Out Of Stock
HK MP5K/SP5K/SP89 Vented Horizontal Forearm with Handstop - Black
USA
$44.95MP5K, SP5K, SP89 - Vented Horizontal Forearm with Handstop Each forearm will fit the MP5K or SP89 style of firearms. As an added bonus this item counts as a US made part toward 922r compliance. Each forearm has the latest enhancements and upgrades...HKP-19471$44.95 -
Out Of Stock
HKP G36K Barrel Front End Kit
HKP HK Parts
$889.95G36K Barrel Front End Barrel Kit - 223/556 New production HK G36K style barrel conversion and front end kit. Each kit will include the necessary parts to build a G36/SL8 variant into the G36K barrel length variant as pictured. All you need is this kit to...HKP-18225$889.95 -
Out Of StockOn Sale
HKP HK Mark 23 Gen 2 Rail Mount Compensator - Black - BLEMISHED
HKP HK Parts
Now: $239.95Was: $329.95HKP HK Mark 23 Gen 2 Rail Mount Compensator - Black - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The HK Parts Mark 23 Compensator is the perfect...HKP-18745-BL-BNow: $239.95Was: $329.95 -
On Sale
HKP HK MP5 Navy Binary Trigger Group - Engraved - RAL 8K - BLEMISHED
FA Franklin Armory / HKP
Now: $849.95Was: $1,499.95Franklin Armory BFSIII HK-C1 – Trigger Group - RAL 8K HK MP5 Navy PLEASE NOTE: SOLD AS-IS DUE TO THE PICTOGRAM PAINT BEING BLEMISHED - SEE PHOTOS. 3 Position Navy style Engraved Pictograph – HK Binary Trigger Group Our latest and...HKP-21291-BNow: $849.95Was: $1,499.95 -
HKP HK MR556/CR556/MR762 H-Key 20 Rail Segment
HKP HK Parts
$49.95HKP HK MR556/CR556/MR762 H-Key 20 Rail Segment 20 slot rail segment for the new "HKey" style forearms. This rail section is designed to fit and attach to any of the new HKey style forearms now being shipped on the MR556, CR556, MR762 and similar models...HKP-17848$49.95 -
Out Of Stock
HKP HK P30L Comp Weight™ Compensator w/ Rail Adapter - Black
HKP HK Parts
$184.95HKP HK P30L Comp Weight™ Compensator w/ Rail Adapter - Black Compatible With: HK P30L Specifications: Length: 3 3/4 inches Width: 1 3/8 inches Weight: 3.6 oz Torque: 3nM / 26 inch-lbs Includes: Quick Detach Lever Construction: Crafted from...HKP-19039$184.95 -
HKP HK PSG1/93/33 (5.56/.223) MSG90 Style Match Barrel
HKP HK Parts
$499.95HK PSG-1, MSG-90 Style 556,223 HK 93, HK 33 Match Barrel: This is the finest PSG1 barrel you can get for your custom HK93, SG1, PSG1 style build in .556. Built on trusted tooling to HK specifications. Perfect for that custom build or the for the...HKP-17008$499.95 -
HKP HK UMP Extended Top Rail - Red
HKP HK Parts
$59.95HKP HK UMP Extended Top Rail - Red Nearly an 1" longer than the standard length top rail. This picatinny top rail allows the user to add an eotech, aimpoint, acog, etc. Made in the USA from aluminum material and hard coat anodize in a beutiful Red...HKP-21049$59.95 -
On Sale
HKP HK VP9/HK P30 Enhanced Magazine Extension Kit +7 - Black - BLEMISHED
HKP HK Parts
Now: $38.95Was: $64.95HKP HK VP9/HK P30 Enhanced Magazine Extension Kit +7 - Black - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Our enhanced magazine extension builds...HKP-21592-BL-BNow: $38.95Was: $64.95 -
HKP HK45C Comp Weight™Compensator LH Holster - Black
HKP HK Parts
$79.95HKP HK45C Comp Weight™Compensator LH Holster - Black The HK45 series Comp Weight™ holster is an outside the waistband that allows you to use the holster with the HK Parts Comp Weight™ Compensator installed. For a left-hand...HKP-18994$79.95 -
HKP MP5 40/10 Fake Suppressor/Barrel Extension - 3-Lug
HKP HK Parts
$69.95HKP MP5 40/10 Fake Suppressor/Barrel Extension - 3-Lug This fake suppressor is used as a barrel extension to bring your H&K MP5 40/10 8.85" barrel to legal conforming standards of 16" so you do not have to register the weapon as an SBR. This fits...HKP-00889$69.95 -
On Sale
HKP Short Sleeve Tee Female - Gray
HKP HK Parts
Now: $9.95Was: $14.95HKP Short Sleeve Tee Female - Gray Get your hands on some of our premium new apparel! Featuring our sleek new logo printed over soft cotton, this shirt is certain to catch an eye at the range! Features: Female fit Fine cotton High fidelity DTG...HKP-21020-MNow: $9.95Was: $14.95 -
On Sale
HKP Short Sleeve Tee Female - OD Green
HKP HK Parts
Now: $9.95Was: $14.95HKP Short Sleeve Tee Female - OD Green Get your hands on some of our premium new apparel! Featuring our sleek new logo printed over soft cotton, this shirt is certain to catch an eye at the range! Features: Female fit Fine cotton High fidelity DTG...HKP-21017-MNow: $9.95Was: $14.95 -
Lazy Wolf VP Series C1 Curved Trigger - Purple Tab
Lazy Wolf
$134.95C1 - Curved VP Series Trigger - Lazy Wolf Guns - Purple Tab In a collaboration with Lazy Wolf Guns, HK Parts is offering aftermarket triggers for your HK VP9 & VP40 handguns. The drop in VP9 series trigger is the best trigger ever developed after...HKP-19814$134.95 -
Lee Sporting, Magpul HK MP5 Complete Trigger Group Flat Trigger
Lee Sporting, Magpul
$549.95Lee Sporting Complete Trigger Group - MP5 C/P - Flat Trigger Ergonomic upgrade to OEM grip. 4.3oz lighter than OEM trigger group. Housing made from MJF PA11 nylon. Bespoke ejector lever CNC cut from 4140. Compatible With: HK PTR Dakota Tactical...HKP-20482$549.95 -
Magpul HK MP5 - MOE PR Stock
Magpul
$189.95Magpul Industries - MOE MP5 Stock New MOE PR MP5 stock fully assembled with our own MP5 AR stock/brace adapter. MOE PR stock blends the simplicity of the legacy MOE Carbine Stock with design lines reminiscent of the PRS Lite now coupled with...HKP-21196$189.95 -
Magpul MOE Stock MIL Spec - Black
Magpul
$44.95Magpul MOE Stock MIL SPEC - Black Magpul Industries MOE Carbine Black Stock Complete - MIL Spec Compatible With: MR556 & HK 416 equipped with mil-spec buffer tubes AR-15 platforms with mil-spec buffer tubesHKP-19393$44.95 -
On Sale
Match Weight HK VP40 w/ Picatinny Rail - Black
Match Weight
Now: $99.95Was: $194.99Match Weight HK VP40 w/ Picatinny Rail - Black Take your VP40 to the next level with our Aluminum Compensator offered in (2) styles, with and without picatinny rail. Each Match Weight Compensator is CNC machined in our factory outside...HKP-19902Now: $99.95Was: $194.99 -
Meprolight HK USPC Tru-Dot Rear Night Sight
Meprolight
$65.95Meprolight HK USPC Tru-Dot Rear Night Sight Features: Unequaled low light performance Brightest night sights available today Used by Military & Law Enforcement All Tru-Dot sights are covered by a 12 years usable illumination warranty to original...HKP-16593$65.95 -
MI/HKP HK MP5K Alpha Folding Stock
MI Midwest Industries
$419.95Midwest Industries/HKP HK MP5K Alpha Folding Stock Brace Adapter The Midwest Industries Alpha folding stock paired with the HK Parts picatinny rail adapter offers unparalleled versatility. Adjust your length of pull, cheek riser, and butt pad to your...HKP-21514-M$419.95 -
Michaels Machines HK UMP .40 Semi-Auto Bolt Group - Complete
$649.95Michaels Machines HK UMP .40 Semi-Auto Bolt Group - Complete MM’s UMP tungsten filled UMP .40 bolt carrier. Heat treated, parkarized and polished for the best look and function possible, as an added bonus it now includes German HK internals which...HKP-20626$649.95 -
Out Of Stock
MM HK 23E (5.56/.223) Heavy Rifle Barrel
Michaels Machines
$1,437.95MM HK 23E (5.56/.223) Heavy Rifle Barrel Brand new US-made custom rifle barrel. Quick change HK23E, MM23E or HK13 Barrel. A must-have spare for your HK rifle or MG. Factory Barrels are hard to find and expensive, but these barrels are of great...HKP-02513$1,437.95 -
MM HK UMP (.40 S&W) Conversion Kit
Michaels Machines
$999.95HK UMP 40 Caliber Conversion Kit With this UMP Conversion kit, UMP .45 sub guns can be converted to .40 caliber. Machined bolt carriers are available for USC/UMP conversion sub guns. This is a simple drop-in conversion. The time required to change...HKP-18754$999.95 -
Out Of Stock
MM HK UMP (9mm) Full Auto Bolt
Michaels Machines
$699.95HK UMP 9mm - Full Auto Bolt - Stripped The full auto bolt carrier is for HK UMP rifles. The full-auto bolt carrier will not work in the HK USC conversion rifles. One of the finest aftermarket carriers you can buy. Features: Tungsten filled Heat...HKP-02288$699.95 -
Out Of Stock
MM HK UMP/USC (9mm) Semi Auto Bolt Carrier
Michaels Machines
$699.95HK UMP/USC (9mm) Semi Auto Bolt Carrier The semi-auto bolt group is needed for HK USC to HK UMP caliber conversions. The full-auto bolt carrier will not work in HK USC rifles. Specifications: Tungsten Filled Heat Treated Parkerized &...HKP-02283$699.95 -
On Sale
Odin Holsters HK P30SK Comp Weight™ Compensator LH Holster - Black
Odin Holsters
Now: $49.95Was: $79.95Odin Holsters HK P30SK Comp Weight™ Compensator LH Holster - Black The P30SK Comp Weight™ Compensator holster is an outside the waistband that allows the HK Parts Comp Weight™ to be installed as well. For a left-hand shooter with or...HKP-18843Now: $49.95Was: $79.95 -
On Sale
Odin Holsters SIG P365 Stand Off LH Holster
Odin Holsters
Now: $37.95Was: $84.95Stand Off Holster - LH - SIG P365 This holster allows the HK Parts stand off device to be installed. Each holster is made by hand and is a custom holster made for use with the HK Parts stand off device. Custom molded using a vacuum former for perfect...HKP-19447Now: $37.95Was: $84.95 -
Promag 12 Round HK USP .45 ACP Magazine - Black
Promag
$36.95HK USP .45 12 Round Magazine - USA Made in the US by Promag. Compatible With: USP .45 FS USP 45 Tactical USP 45 Elite & Expert Please Note: These are not factory HK-made and are aftermarket. All returns or warranties will need to be made...HKP-02090$36.95 -
RCM HK MP5N 9mm Barrel - Threaded 1/2x32 - 3-Lug
RCM
$179.95RCM HK MP5N 9mm Barrel - Threaded 1/2x32 - 3-Lug This MP5N barrel delivers exceptional value, crafted from premium Cold Hammer Forged Steel and treated with a durable nitride process. It easily accommodates suppressors and other muzzle attachments. Brand...HKP-16967$179.95 -
RCM HK P30L 9mm Barrel - Non-Threaded
RCM
$206.25RCM HK P30L 9mm Barrel - Non-Threaded 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 P30L 9mm pistol, ideal as a spare or for...HKP-16686$206.25 -
Out Of Stock
RCM HK21 & HK11 Trunnion
RCM
$274.95RCM HK21 Trunnion When RCM set out to make a replacement trunnion for the venerable HK21, they started the process by putting a factory unit through rigorous destructive metal testing. The end-product: a US-made trunnion blending the proper...HKP-21609$274.95 -
Refinished HK MP5K Slimline Forearm - OD Green
H&K Heckler & Koch
$69.95Refinished HK MP5K Slimline Forearm - OD Green Used German military refinished O.D green slimline forearm with heat shield cut down to fit the MP5K. These are rare items- available exclusively at HK Parts. Compatible With: MP5K, SP5KHKP-20498$69.95 -
On Sale
Ruger Precision Bolt Shroud Upgrade & Firing Pin Take Down Tool-Aluminum
HKP HK Parts
Now: $48.95Was: $67.95Ruger Precision Bolt Shroud Upgrade With Built In Firing Pin Takedown Tool - Aluminum Ultra lightweight, super strong aluminum alloy bolt shroud upgrade for the Ruger Precision rifle. This necessary enhancement fits all Ruger Precision rifles...HKP-17859Now: $48.95Was: $67.95 -
On Sale
Sig Sauer ROMEO1 1x30 MM Reflex Sight
Sig Sauer
Now: $219.95Was: $329.95Sig Sauer ROMEO1 1x30 MM Reflex Sight The ROMEO1 Miniature Reflex Sight is the ideal sighting solution for the modern semi-automatic pistol, MSR platforms, and shotguns. Features a molded glass aspheric lens with high performance coatings for superior...HKP-19578Now: $219.95Was: $329.95 -
Strike Industries AR-15 PDW Stabilizer
Strike Industries
$278.95Strike Industries AR-15 PDW Stabilizer The Strike Industries PDW Stabilizer represents the pinnacle of ultra-compact PDW systems. At the compressed position, the compact PDW allows for effortless maneuverability particularly in close quarters...HKP-21311$278.95 -
Talon Grip HK P30 Rubber - Small - Black
Talon Grip
$19.99TALON Grip - H&K P30 - Rubber Black - Small Backstrap TALON grips are textured, stick-on gun grips that help you get a secure hold on your firearm improving performance, safety, and confidence so you maintain control. Installation is quick and easy...HKP-20254$19.99