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 UMP, USC Lower Bolt Catch
HKP HK Parts
$22.95HK UMP & USC Bolt Catch For Last Round Hold Open New HK USA lower bolt catch. Compatible With: HK UMP HK USCHKP-19565$22.95 -
HK VP9, VP40 Grip Panel Right Side - Medium - Gray
H&K Heckler & Koch
$16.95H&K VP9, VP40 Grip Panel Right Side - Medium - Gray New HK German manufactured. Right side, medium size. Perfect for spare or for custom stippling projects. Drop-in part for your HK VP pistol. CompatiHKP-18175$16.95 -
On Sale
Thread Protector - .40 S&W - 9/16x24 RH - Steel
HKP HK Parts
Now: $16.95Was: $19.95HKP .40 S&W Thread Protector - 9/16x24 The New Style .40 Caliber Tactical Thread Protector is an essential accessory designed to safeguard your HK .40 caliber pistol's threaded barrels. Perfectly...HKP-18145Now: $16.95Was: $19.95 -
HK USP, USP Tactical Lanyard Loop Insert - .45 ACP
H&K Heckler & Koch
$18.95HK USP/Tactical .45 ACP Lanyard Loop Insert This item does not have the lockout device installed for those who prefer not to have this device on their firearm.HKP-02385$18.95 -
HK USP Hammer, Hammer Strut Roll Pin
H&K Heckler & Koch
$5.95HK USP Hammer, Hammer Strut Roll Pin This pin installs in the hammer and makes contact with the hammer strut.HKP-02268$5.95 -
HK416, MR556 Barrel Mandrel Tool
HKP HK Parts
$169.95HKP HK MR556/416 Barrel Mandrel Tool US Made - HK 416, MR556 Barrel Mandrel Tool.HKP-19059$169.95 -
HK416 A3 Handguard - Flip Up Sight - 11" - Extended
H&K Heckler & Koch
$799.95Heckler and Koch Extended Forearm with Integrated Flip Up Front Sight for HK 416 A3 HK designed and manufactured in Germany 11" HK416 A5, MR556 extended quad rail. This drop-in unit offers 2 full...HKP-17377$799.95 -
HK UMP, USC Bolt Catch Spring
H&K Heckler & Koch
$8.95HK UMP & USC Bolt Catch Spring Compatible With: HK UMP HK USCHKP-01900$8.95 -
Out Of Stock
HK Bolt Locking Lever Pin - Cylindrical Pin
H&K Heckler & Koch
$4.95Heckler and Koch Bolt Locking Lever Pin/Cylindrical Pin New HK91, G3, PTR-91 .308 & HK 93, 33, 53 Bolt Carrier Bolt Locking Lever pin (cylindrical pin). This item holds the locking lever & spring in...HKP-16913$4.95 -
HK MP5 Recoil Rod Bushing - .40 S&W, 10mm, .357 SIG
H&K Heckler & Koch
$9.95New HK German MP5 40/10/.357 Recoil Rod Guide Ring Bushing For all MP5 40/10 & MP5F Recoil Rods. These will wear and become brittle and torn with age and use. A great item to have on hand for spare...HKP-00441$9.95 -
HK MP5, HK94 Complete Bolt Head - Used
H&K Heckler & Koch
$349.95 - $369.95H&K MP5 & HK94 Complete Bolt Head - Used Last call! These original HK German MP5 & HK94 bolt heads are now classified as restricted import items by HK making stock extremely limited. Date Code:<HKP-01881-M$349.95 - $369.95 -
HK G3 A2 Adjustable Stock Extension
USA
$69.95HK G3 A2 Adjustable Stock Extension Each stock extension is adjustable in 1/2" increments to enable you to achieve the proper length of trigger pull. This allows you a full 1.50" in length...HKP-00872$69.95