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, 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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HKP HK 416, Colt M4 .22 Match Trigger Upgrade Spring Kit
HKP HK Parts
$17.49HK 416 .22 & Colt M4 - .22 Match Trigger Spring Kit - Set of 3 Enhanced Springs: The HK Parts Match drop-in spring upgrade set will enhance your HK 416's trigger pull to an even smooth, crisp, and lighter pull that will promote better control,...HKP-17340$17.49 -
H&K 30 Round HK 416 .22LR Magazine - Black
H&K Heckler & Koch
$29.95HK, Umarex, Walther, HK416 - .22LR Magazine - 30 Round Magazine - BLACK Heckler & Koch Factory magazines are made to H&K specifications and tolerances using high quality materials that provide perfect fit, durability and reliability. Expect...HKP-19834$29.95 -
HKP HK 416 Pistol Brace Adapter/AR .22LR Stock Adapter
HKP HK Parts
$34.95HKP HK 416 Pistol Brace Adapter/AR .22LR Stock Adapter Specifications: Fits: AR 22, HK /Walther 416 .22lr Manufactured: 100% made in the USA Easy to install no gunsmithing required machined from solid billeted alloy Hard coat anodized for a lifetime of...HKP-17442$34.95 -
H&K 30 Round HK MR556/416 5.56/.223 Maritime Magazine - Black
H&K Heckler & Koch
$59.00HK 416, MR556 30 Round Maritime Magazine - German HK The HK 416 and MR556 magazines will also fit all AR15/M16 variants. Designed to provide optimum ammunition feeding for any M16/M4/AR15-type weapon. Originally developed by HK for the British L85 (SA80)...HKP-00487$59.00 -
Black Dog Machine 50 Round HK 416 .22LR Magazine - Translucent
Black Dog Machine
$99.95HK, Walther, Umarex HK416 50 Round - .22 LR Magazine Each 50 round magazine fits the HK 416 .22 rifles & pistol models.Made in the USA by BDM exclusively for HKPARTS. Using an existing drum model that is tried and true. This is the only drum ever to...HKP-16236$99.95 -
Walther 20 Round HK 416/Colt M4 .22LR Magazine - Black
Umarex / Walther
$35.00HK, Umarex, Walther, HK416 .22LR Magazine - 20 Round Magazine Each magazine is the factory OEM magazine for all of the models above. Brand new factory fresh. This magazine is the perfect balance of magazine capacity size and fitment to the firearm...HKP-01748$35.00 -
Walther 20 Round HK 416/Colt M4 .22LR Magazine - Gray
Walther
$24.95HK, Umarex, Walther, HK416 .22LR Magazine - 20 Round Magazine Brand New Walther German manufactured 20 round .22 cal magazine. Compatible With: HK 416 .22 Colt M4 .22 HK G36 .22 Beretta ARX 160 .22 Hammerli Tac .22 This is the factory OEM magazine for...HKP-14554$24.95 -
HKP HK 416 .22 Picatinny Pistol Brace Adapter/Stock Adapter
HKP HK Parts
$69.95HKP HK 416 .22 Picatinny Pistol Brace Adapter/Stock Adapter CNC billet machined 100% in the USA from one piece of aircraft grade aluminum. Each adapter was fitted for optimal use on the HK 416 .22 Pistol models with a seamless fit. Each unit has a left...HKP-19742$69.95 -
H&K HK MR556/416 Gas Block Roll Pin
H&K Heckler & Koch
$7.95HK 416 & MR556 Gas Block Pin This is the retaining pin for an HK 416 gas block. A must-have, as HK recommends using new pins once they are removed or damaged. Size: 5 x 18 mm.HKP-02534$7.95 -
H&K HK MR556/416 Enhanced Buffer Spring
H&K Heckler & Koch
$19.95Enhanced HK German MR556 & 416 Buffer Spring The HK MR556/416 buffer spring will also work with other AR-15 and M-16 rifles. This is the finest AR15 style buffer spring available. A high wear item and a must have replacement part. Compatible...HKP-00039$19.95 -
Walther 10 Round HK 416/G36/Colt M4 .22LR Magazine - Black
Walther
$35.00HK, Walther, Colt, Beretta - HK416 .22 - 10 Round Magazine Impact-resistant polymer construction. Thumb-assisted loading button. Heavy-duty spring-steel mag spring. Compatible With: HK 416 .22 Colt M4 .22 Beretta AR160 HK G36 .22 Hammerli Tac .22HKP-01747$35.00 -
Walther 30 Round HK 416 .22LR Magazine - Gray
Walther
$39.95HK, 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 ...HKP-01749$39.95 -
H&K HK MR556/416 Backplate w/ Sling Loops
H&K Heckler & Koch
$46.95HK 416, MR556 Ambidextrous Sling Loop BackplateGenuine HK German manufactured 416, MR556 new style backplate with sling loop.Fits the following: HK MR556, HK 416 buffer tubes All Standard AR-15, M4 & M16 buffer tubesHKP-17151$46.95 -
H&K HK MR556/416 Tungsten Recoil Buffer
H&K Heckler & Koch
$76.95H&K HK MR556 & 416 Tungsten Recoil Buffer The proprietary tungsten HK-manufactured buffer is one of the reasons why the HK 416 and MR556 are as reliable as they are. This is the perfect addition to all AR/M16 uppers. Compatible With: HK...HKP-00041$76.95 -
H&K HK MR556/MR762/416/417 Front Sight
H&K Heckler & Koch
$149.95HK MR556, HK416 & MR762 & HK 417 Fixed Front Sight Assembly German HK front fixed sight for use with a rear diopter style sight. It can also be used on some other Ar-15/M-16 applications. Complete with all mounting hardware for a Picatinny rail...HKP-00025$149.95 -
H&K HK MR556/MR762/416/417 Battle Grip w/ Storage - Black
H&K Heckler & Koch
$79.95HK 416, MR556, MR762, & HK 417 Battle Grip With Storage Compartment New HK German factory battle grip with a storage compartment in the bottom. Each grip will fit all AR-15/M-16 lower receivers as well. It has a superior fit and feel to any other...HKP-00033$79.95 -
H&K HK MR556/MR762/416/417 Firing Pin Spring
H&K Heckler & Koch
$14.95HK MR556, MR762 Firing Pin Spring - German This part is great to have on hand as this item is a high wear and replacement part and one of the most common breakage parts on the HK 416/MR556 rifles. Compatible With: HK MR556 HK MR762 HK 416 HK 417 HK...HKP-00928$14.95 -
H&K HK MR556/MR762/416/417 Handguard Rail Cover - Black
H&K Heckler & Koch
$19.95HK 416, MR556, & MR762 Quad Rail Picatinny Rail Cover - Black Brand new Heckler & Koch Picatinny rail covers made of high-impact HK polymer. Each rail is equipped with a quick-release tab and marked with the HK logo. Compatible...HKP-01743$19.95 -
Out Of Stock
H&K HK MR556/416 Ejection Port Cover - RAL 8K
H&K Heckler & Koch
$59.95HK German HK 416, MR556 Ejection Port Cover In RAL8000 HK manufactured newer polymer style cover assembly found on the latest HK 416 & MR556's. This item can also be used on other AR15 style projects to enhance the build with the finest ejection port...HKP-18062$59.95 -
H&K HK MR556/416 14.5"/16.5" Rear Diopter Sight
H&K Heckler & Koch
$199.95H&K HK MR556 & 416 14.5"/16.5" Rear Diopter Sight HK German Rear Diopter Sight is the proper rear sight to pair with all HK 416 14.5, and MR556 uppers and rifles. This sight can be paired with a fixed front sight or folding front sight.HKP-00027$199.95 -
Out Of Stock
H&K HK MR556/MR762/416/417 Battle Grip w/ Storage - RAL 8K
H&K Heckler & Koch
$69.95HK 416, MR556 & MR762, HK 417 Battle Grip With Storage Compartment- FDE New HK German factory battle grip with storage compartment access located in the bottom of the grip. Each grip will fit all AR-15/M-16 lower receivers. Superior fit & feel to...HKP-18584$69.95 -
HKP HK MR556/416 Handguard Rail System Hex Screw
HKP HK Parts
$9.95HK416, MR556 Replacement Handguard Rail Screw - Hex- Stainless SteelHex head replacement handguard retension screw for your HK416, MR556 forearm. Made in the USA from 17-4 SS with a 5mm hex head for ease and use when installing and taking off the...HKP-17657$9.95 -
H&K HK 416 10.5" Rear Diopter Sight Assembly
H&K Heckler & Koch
$224.95HK German 416 10.5 Rear Diopter Sight Assembly This is the proper rear sight for use on all HK 416 10.5 uppers and firearms. This is also a great sight alternative for those who need a lower sight setup for the AR, XCR, etc. To be used in conjunction...HKP-01109$224.95 -
On Sale
Magpul 30 Round AR-15, HK MR556, HK 416 PMAG M3 Magazine
Magpul
Now: $12.95Was: $18.95Magpul 30 Round AR-15, HK MR556, HK 416 PMAG M3 Magazine This magazine is the latest and greatest M3 model - NON-windowed PMAG (Polymer Magazine) and is a lightweight 5.56 NATO, M-16 compatible magazine. It features a pop-off storage/dust cover that...HKP-00639Now: $12.95Was: $18.95 -
H&K G36/MR556/MR762/416 (5.56/.223/7.62x51/.308) Extractor Spring
H&K Heckler & Koch
$8.95HK German Extractor Spring A must-have replacement wear part and a great item to have on hand. Compatible With: HK G36 HK G36K HK G36C HK SL8 HK 416 HK MR556HKP-00288$8.95 -
Out Of Stock
H&K HK MR556/416 Mil-Spec German E1 Rear Stock - Black
H&K Heckler & Koch
$0.00H&K HK MR556 & 416 Mil-Spec German E1 Rear Stock - Black The HK E1 Buttstock fits MILSPEC buffer tubes (receiver extensions) for M4/AR15-type weapons. Each stock comes with the convex buttpad as found on factory-issued HK 416s. Compatible...HKP-00052$0.00 -
H&K HK MR556/MR762/416//417 Complete Piston Rod Assembly
H&K Heckler & Koch
$64.95H&K HK MR556, MR762, 416, & 417 Complete Piston Rod Assembly A great replacement or spare to keep on hand. Compatible With: HK MR556 HK 416 HK 416 A5 MR762 HK 417 Please Note: Does not fit barrels less than 10 inches.HKP-00042$64.95 -
H&K HK 416 A5 Grip V2 - FDE
H&K Heckler & Koch
$49.95HK 416, HK 417 Grip- V2 HK 416, HK 416-A5 HK 417, HK 417-A2HKP-18467$49.95 -
Out Of Stock
H&K HK MP5, HK 416, GSG5 .22LR Sling - Black
H&K Heckler & Koch
$0.00HK 416, HK MP5 & GSG5 .22LR Sling This is a factory HK-manufactured sling perfect for HK weapons systems, including .22LR models. Each unit comes with 2 HK German sling hooks or ambi use, as well as a quick detach buckle. This part is fully...HKP-00893$0.00 -
H&K HK MR556/416 Ejection Port Cover Door Assembly
H&K Heckler & Koch
$51.95HK German HK 416, MR556 Ejection Port Cover Door Assembly Complete This is the newer polymer style cover found on the latest HK 416 and MR556's. This is the complete ejection port door assembly needed on all AR15 or MR556/HK416 models. Can also be used...HKP-16951$51.95 -
H&K HK MR556/MR762/416/417/G36/SL8 Complete Gas Piston
H&K Heckler & Koch
$50.95HK MR556, MR762, 416, 417, G36, & SL8 Complete Gas Piston New HK German gas piston assembly with three locking piston rings installed. This is a great spare part to have on hand, as the gas piston takes a lot of wear and tear. Compatible With: HK...HKP-00047$50.95 -
HKP HK 416 .22 Bench Mat
HKP HK Parts
$24.95HK 416 .22 LR Bench, Gunsmithing Mat Our HK 416 .22 bench mat is the perfect cleaning & repair mat designed specifically for your HK 416 .22 models. Have fun and learn while you work on your favorite H&K firearm. The soft top protects your...HKP-17279$24.95 -
H&K HK MR556/MR762/416/417 V2 Battle Grip
H&K Heckler & Koch
$69.95HK MR556, HK416 & MR762, HK417 Variant 2 Battle Grip With Contoured Back Strap HK-manufactured AR15-style pistol grip will fit all AR-15/M-16 lower receivers as well. It is a great upgrade for any AR15, M16/416 style firearm. Provides...HKP-01912$69.95 -
HKP HK MR556/416 Bench Mat
HKP HK Parts
$24.95HK MR556, HK 416 Bench MatOur HK MR556, HK416 bench mat is the perfect cleaning & repair mat designed specifically for your Heckler & Koch MR556 & HK416 models. Have fun and learn while you work on your favorite H&K firearm. The soft top...HKP-17169$24.95 -
H&K HK MR556/MR762/416/417 Tactical Sling - Black
H&K Heckler & Koch
$76.95H&K HK MR556, MR762, 416, & 417 Tactical Sling - Black OEM HK German part. The tool is built into the HK sling hook. For the MR556 model, a sling adapter will be needed for the front attachment point as the MR556 lacks the ambi sling loop on the...HKP-00028$76.95 -
H&K HK 416/MR556/MR762 Trigger Guard Pin
H&K Heckler & Koch
$3.95HK MR556, 416 Trigger Guard Retaining Pin HK 416 HK MR556HKP-02678$3.95 -
HKP 30 Round HK 416/COLT M4 .22 Magazine Spring
HKP HK Parts
$3.95HK 416 & Colt .22 30 Round Magazine Spring HK 416 .22 rifle as well as the Colt .22 Rifle. A good supply of spare mag springs is a must. These are ideal to have on hand as the spring can become damaged or worn out. New fresh production mag spring...HKP-14409$3.95 -
Out Of Stock
HKP Piston 3-Ring Replacement Set
H&K Heckler & Koch
$0.00HKP Gas Piston Ring Replacement Combo Set- 3 Rings The gas rings are prone to periodic breakage and wear and tear and require them to be replaced periodically. These are some of the most common breakage parts we see that need to be replaced on these...HKP-00048$0.00 -
Out Of Stock
H&K HK MR556/416 Extended 11" Quad Rail - Black
H&K Heckler & Koch
$387.95HK MR556/416 Extended 11" Quad Rail - Black This drop-in unit offers two full inches in extra length, not the standard 9" rail that comes with the HK 416/MR556, but an extended 11" rail that allows for a longer sight radius and more rail space...HKP-01960$387.95 -
H&K HK MR556/416 Ejection Port Cover - Black
H&K Heckler & Koch
$34.95HK German HK 416, MR556 Ejection Port CoverHK manufactured newer polymer style cover assembly found on the latest HK 416 & MR556's. This item can also be used on other AR15 style projects to enhance the project with the finest ejection port cover...HKP-15229$34.95