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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Out Of Stock
RCM HK P30SK & HK P2000SK 9mm Tactical Barrel - Threaded 1/2x28 RH
RCM
$225.00RCM HK P30SK & HK P2000SK 9mm Tactical Barrel - Threaded 1/2x28 RH Each HK P2000SK and P30SK tactical barrel is meticulously crafted from ordnance grade steel, heat treated, and finished with a durable nitride coating. This is the finest...HKP-19306$225.00 -
Out Of Stock
RCM HK USP .40 S&W Tactical Barrel - Threaded 9/16x24
RCM
$225.00RCM HK USP .40 S&W Tactical Barrel - Threaded 9/16x24 Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the best replacement barrel for the HK USP full-size .40 S&W...HKP-17744$225.00 -
B&T .45 ACP Flash Hider - 3-Lug
B&T Brugger & Thomet
$164.95B&T .45 ACP Flash Hider - 3-Lug B&T Switzerland has supplied these to law enforcement and military units around the world. Rock solid, mil-spec quality from an H&K OEM manufacturer. This flash hider slips over the end of the 3-lug barrel and...HKP-18346$164.95 -
B&T HK MP5 Folding Stock with HK Parts Adapter
B&T Brugger & Thomet
$299.95B&T Folding Stock for All MP5 Full Size Variants Swiss made B&T folding stock completely assembled With our own HK Parts stock adapter. CNC machined aircraft grade aluminum with QD sling attachment point. Compatible With: MP5 (NOT...HKP-20216$299.95 -
Franklin Armory HK MP5K - BFSIII HK-C1 Binary SEF Navy Style Trigger Group
FA Franklin Armory
$879.95Franklin Armory HK MP5K - BFSIII HK-C1 Binary SEF Navy Style Trigger Group In position 3 it will fire 1 round on pull and 1 round on release. With a 4.5 lb trigger pull, making this the fastest semi-automatic trigger on the market. The BFSIII™ is...HKP-20928-M$879.95 -
Geissele HK 416 Super Modular M-LOK 14.5" Rail - Black
Geissele
$499.95Geissele HK 416 Super Modular M-LOK 14.5" Rail - Black The Super Modular Rail HK416 M-LOK was designed to replace the standard rail on an HK416 or MR556 weapon platform. The rail system utilizes the stock HK barrel nut, but incorporates the strength,...HKP-19806$499.95 -
Sale
H&K 91/G3 (7.62x51/.308) Complete Trigger Pack - Semi Auto - BLEMISHED
H&K Heckler & Koch
Now: $199.95Was: $348.95HK German SEMI .308 Trigger Pack Complete THIS IS A BLEMISHED ITEM THAT IS COSMETIC ONLY. THIS ITEM IS SOLD AS IS AND NOT ELIGIBLE FOR A RETURN. HK German manufactured trigger pack complete with all the parts being professionally converted from a factory...HKP-00217-BNow: $199.95Was: $348.95 -
H&K Claw Mount Screw For Optics & Rails
H&K Heckler & Koch
$3.95H&K Claw Mount Screw For Optics & Rails HK German rail screw that is used on the HK claw mount to add an optic such as a Hendsoldt or Stanag optic to the claw mount. The screw is used German surplus manufacture but in perfect shape for use on all...HKP-17921$3.95 -
Out Of Stock
H&K HK 30 Round MP5/SP5 & MP5K/SP5K 9mm Magazine - OD Green
H&K Heckler & Koch
$99.95New German - H&K MP5, SP5, SP5K, MP5K 9mm - 30 Round Curved Magazine - OD Green Heckler & Koch factory fresh magazine from this current year's production. 9mm 30 Round curved all-steel magazine stamped "Made In Germany". These are the...HKP-19973$99.95 -
H&K HK 416 Battle Grip With Tools - RAL 8K
H&K Heckler & Koch
$159.95H&K 416/417 & MR556/762 Battle Grip With Tools - RAL 8000 HK German battle grip with HK tools stowed in the grip's storage compartment. Finish your HK build with our favorite grip or upgrade your AR-15 platform. Compatible With: HK...HKP-21462$159.95 -
H&K HK 416 Enhanced Firing Pin/Retaining Pin
H&K Heckler & Koch
$19.95HK 416 Firing Pin Retaining Pin- New Style This part is the newer style pin that is goldish, super hardened, and much less prone to wear and tear. The enhanced version is the most robust, easiest-to-use pin available. Compatible With: HK 416 AR15, M4...HKP-02658$19.95 -
H&K HK 416/MR556 Quad Rail
H&K Heckler & Koch
$419.95Quad Rail - HK 416, MR556 HK German 416, MR556 Quad Rail without mounting screw. Compatible With: MR556 HK416 Specifications: Length: 9 1/4" Color: Charcoal grayHKP-16858$419.95 -
H&K HK G36 Backplate w/ Recoil Buffer
H&K Heckler & Koch
$79.95HK G36 Backplate With Recoil Buffer This is a great spare or replacement to have on hand. These are also required for those that are doing the SL8-G36 conversions provided by Tommy Bostic & Chopstix Kid.HKP-01058$79.95 -
H&K HK G36C/G36K Gas Piston
H&K Heckler & Koch
$89.95HK German G36C & G36K Gas Piston - Complete New HK German factory G36C and G36K gas piston complete with sealing rings installed. A great spare or replacement part. This is also a popular part for those upgrading to an SL8 to G36K or C barrel length...HKP-00352$89.95 -
H&K HK MR556/416 Magazine Catch
H&K Heckler & Koch
$49.95HK 416, MR556 Magazine Catch New HK German manufacture magazine catch for the HK 416 and MR556 family of firearms.HKP-15458$49.95 -
H&K HK MR556/416 Upper Receiver Threaded Piston Guide
H&K Heckler & Koch
$19.95HK MR556 & 416 Upper Receiver Threaded Piston Guide Compatible With: HK MR556 HK 416 HK M27HKP-02640$19.95 -
H&K HK P30SK/P2000SK Hammer Spring
H&K Heckler & Koch
$9.95HK German Hammer Spring This spring is used with LEM and all standard models. Compatible With: P2000SK P30SKHKP-02598$9.95 -
H&K MP5 9mm Magazine Locking Plate - Red
HKP HK Parts
$7.95HK MP5, MP5K 9mm Magazine Locking Plate - HK Red Teflon infused glass filled polymer red colored locking plate that will work with all HK MP5, MP5K 9mm curved magazines. A drop in item that allows you to swap the locking plate to a red unit. A great...HKP-18303$7.95 -
H&K Tactical Pistol Case - FDE
H&K Heckler & Koch
$129.95H&K Tactical Pistol Case - FDE Keep your handgun safe and secure with the HK Tactical Nylon Case. This heavy duty case will accommodate two pistols, accessories and two magazines. Includes movable, velcro-backed modular double magazine pouch, frame...HKP-17153$129.95 -
H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear Spring
H&K Heckler & Koch
$8.95HK UMP, USC, G36, & SL8 Sear Spring This part is used in conjunction with the sear in the trigger body of the lower.HKP-01866$8.95 -
HDPS HK USC (.45 ACP) Faux Sound Suppressor
HDPS
$180.99HDPS HK USC (.45 ACP) Faux Sound Suppressor New second-gen, latest production HDPS Faux Sound Suppressor for the HK USC (Kit includes the Faux Sound Suppressor, lower rail, and screws) This integral one-piece design is milled from a solid...HKP-02369$180.99 -
HK MP5, 94 UMP Style Folding Stock With HK Parts Stock Adapter
USA
$249.95HK MP5, 94 UMP Style Folding Stock With HK Parts Stock Adapter New US UMP style folding stock assembled with our own HK Parts stock adapter. Our HK Parts stock adapter was made from a solid billet of CNC machined aircraft grade aluminum with QD sling...HKP-20215$249.95 -
HK SP5K 9mm - SEF, Navy Style - Clipped & Pinned
H&K Heckler & Koch
$199.95HK German SP5K Spec - Navy Style - SEF C/P Housing HK SP5K Spec ONLY for the newly released HK SP5K spec. Made is Germany and machined to fit the HK SP5K spec only. Compatible With: HK SP5K 9mm Spec For use with an SEF style trigger pack not the...HKP-17945$199.95 -
Sale
HKP 20 Round Extended Magazine - Glock 19
HKP HK Parts
Now: $43.95Was: $59.95HKP 20 Round Extended Magazine - Glock 19 - Black Each unit is fully machined from a solid billet of aircraft-grade aluminum that is fully hard coat anodized and set up for a lifetime of use. Completely assembled with a enhanced extended spring and a 15...HKP-20849Now: $43.95Was: $59.95 -
HKP HK 416 Ejection Port Axle
H&K Heckler & Koch
$4.95Ejection Port Axle - Steel- HK 416 New HK USA manufacture for the HK 416 family of firearms. This is the axle that holds the ejection port cover in place on the upper receiver.HKP-20039$4.95 -
HKP HK 91/G3 (7.62x51/.308) Fixed Stock Complete with Enhanced Heavy Buffer - Black
HKP HK Parts
$279.95New HK91, G3, PTR-91 U.S Made (PTR-91 Manufactured) Fixed Stock with Enhanced Heavy Buffer Installed Made from all German & U.S. made HK parts. This stock will fit any of the HK G3 & HK 91 & PTR rifles. This stock also counts as one U.S...HKP-18937$279.95 -
HKP HK G3 Operator Depot Level Repair Manual
HKP HK Parts
$23.95HKP HK G3 Operator Depot Level Repair Manual This is an older repair manual and the difference is the sections on field and depot repair. This manual has 124 pages, 35 pages of explanations, instructions, and pictures of the depot-level repair and...HKP-15223$23.95 -
HKP HK MR556/416, HK MR762/417 Flip Up Rear Sight-2mm
HKP HK Parts
$139.95HK 416, MR556 & MR762, 417 Flip Up Rear Sight Diopter 2mm Sight - US Attaches to any standard picatinny rail. No hardware needed as this is a self contained quick attach rear sight assembly. This unique sight features a quick & easy push button...HKP-17717$139.95 -
Out Of Stock
HKP HK UMP (.40 S&W/.45 ACP/9mm) Enhanced Mag Release - Billeted
HKP HK Parts
$24.95HK UMP Paddle Magazine Release - Enhanced This is a very common replacement part as they are fairly easy to break on the UMP lower. With this new mag release, you'll get a wider release as well as a much more durable part. Simple & easy to install no...HKP-18758$24.95 -
HKP HK VP9 Optics Plate #6 Sig Romeo 1
HKP HK Parts
$44.95HK VP9 Series Optics Plate #6 - Sig Romeo 1 - Optic Mount - Steel The finest all steel mounting solution for your HK VP9 Series Optic Ready model.New solid billet machined steel optics plate. Each plate is CNC machined from a solid billet of ordnance...HKP-19545$44.95 -
HKP HK VP9/VP9SK, HK VP40 Axle For Trigger Safety Latch
HKP HK Parts
$3.95Axle For Trigger Safety Latch VP9, VP9SK & VP40 HK German factory part. This pin is the axle pin for the safety latch in the VP trigger. Compatible With: HK VP9 HK VP9 Tactical HK VP40 HK VP40 Tactical HK VP9SKHKP-16778$3.95 -
HKP HK VP9SK Low Profile Magwell - Black
HKP HK Parts
$59.95HKP HK VP9SK Low Profile Magwell Low profile, every day carry magwell for the HK VP9SK pistol. For those that would like the enhancements and competitive advantage a mag well offers without the bulk of the larger competition magwell. Funnels mags...HKP-21456$59.95 -
HKP MP5 40/10 Receiver Flat
HKP HK Parts
$399.95MP5 40 & MP5 10mm Reciever Flat - USA The new and latest production with the weldment locations is already lasered and ready to go. This flat is the finest available for the MP5 40/10 family of firearms. Compatible With: MP5 .40 Cal MP5 10mm MP5 ...HKP-00767$399.95 -
Sale
HKP Sig Sauer P365-XMACRO Compensator
HKP HK Parts
Now: $139.95Was: $179.95HKP SIG P365-XMACRO Compensator Our SIG P365-XMACRO compensator reduces recoil and muzzle flip. Each unit is 100% US made and finished in durable black cerakote. Our XMACRO compensator features a picatinny rail to mount lights/lasers. Available...HKP-21259Now: $139.95Was: $179.95 -
Kinetic Development Group HK USC Conversion to ACR Stock Upgrade - FDE
$459.95HK USC-UMP ACR Stock Adapter & ACR Stock Combo - Brown A new product that allows you to add the widely popular Remington ACR folding, adjustable stock to your USC-UMP conversion. Each unit comes complete with the ACR stock, hinge pin, sling mount and...HKP-19845$459.95 -
MM Fixed Stock Heavy Rubber Buttpad
Michaels Machines
$79.95MM Fixed Stock Heavy Rubber Butt pad This part gives a larger surface area to spread the recoil absorption with a wider surface (less felt recoil). It adds an aggressive look and feel to your HK and is US-made with a lifetime warranty by the...HKP-00914$79.95 -
SB Tactical HK MP5K & SP5K SBA3 5 Position Adjustable Stabilizing Brace - Black
SB Tactical
$269.95SBA3 - 5 Position Adjustable Stabilizing Brace - MP5K / SP5K The perfect addition to your firearm with the ability to adjust length with its 5-position adjustable buffer tube. Dramatically enhances versatility, and features a minimalist design with an...HKP-20277$269.95 -
Comp-Tac HK P30L/HK45 RH Paddle Holster - Black
Comp-Tac
$80.95Comp-Tac HK P30L/HK45 RH Paddle Holster - Black The Comp-Tac Paddle Holster is an all-Kydex outside the waistband holster that may be worn for competition, general use or concealed carry. The Paddle is designed to be worn at 3:00 for the right handed...HKP-18817$80.95 -
H&K 12 Round HK P2000/USPC .40 S&W Magazine Housing
H&K Heckler & Koch
$29.95H&K 12 Round HK P2000/USPC .40 S&W Magazine HousingHKP-16538$29.95 -
H&K 91/G3 (7.62x51/.308) Firing Pin Spring - Used
H&K Heckler & Koch
$4.95H&K 91/G3 (7.62x51/.308) Firing Pin Spring - Used This is a common repair and replacement item. Great for spares as this is a common breakage part.HKP-16711$4.95