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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HK P30SK 9mm Complete Recoil Spring Assembly
H&K Heckler & Koch
$64.95HK P30SK 9mm Complete Recoil Spring Guide Rod Assembly Brand new HK German manufacture. Compatible With: P30SK 9mmHKP-17938$64.95 -
HK USP Slide Release Lever
H&K Heckler & Koch
$59.95HK USP Slide Release Lever Compatible With All USP Full Size Pistols & All USP Full Size Variants Below: USP 45 USP 40 USP 9mm USP Tactical (all calibers) USP Expert (all calibers) USP Elite (all calibers)HKP-01674$59.95 -
HK416, MR556 Bolt Head Cam Pin
H&K Heckler & Koch
$31.95Heckler and Koch HK416 and HK MR556 Bolt Head Cam Pin New factory HK German manufactured cam pin for bolt group. A common wear and replacement item. Compatible With: HK 416, MR556 HK 416 A5 HK M27HKP-02539$31.95 -
On Sale
HK51 Barrel - 7.62 / .308 - 8.375" - Threaded 15x1 RH
RCM
Now: $139.95Was: $164.95RCM HK 51 (7.62x51/.308) Barrel - Threaded 15x1 RH Crafted to precise HK51 specifications, this barrel utilizes HK's renowned cold hammer forged (CHF) process. Features include a knurled sight ring, splined design for secure flash hider attachment, and a...HKP-02391Now: $139.95Was: $164.95 -
HK33, HK53, HK93 Magazine Spring - 30 Round
H&K Heckler & Koch
$8.45HK 93,33, & 53 Magazine Replacement Spring For Steel German HK 30-Round Magazines This is a hard-to-find and must-have spare part for your HK high-capacity mags. Please Note: Although not factory correct, these springs will work in the 25-round HK 93...HKP-14411$8.45 -
On Sale
HK MP5K, SP89 Cocking Tube - 9mm - Support Set
HKP HK Parts
Now: $103.95Was: $129.95HKP MP5K/SP89/SP5K 9mm Cocking Tube & Support Set Specifications: Construction: Hard Coated Titanium Color: Matte Black Weight: 1.7 oz. Compatible With: HK MP5K HK SP89 HK SP5K MP5 Reverse stretch builds, clones, or other custom buildsHKP-00184Now: $103.95Was: $129.95 -
On Sale
Flip Front and Rear Sight Set Complete
GSG German Sports Guns
Now: $152.95Was: $179.95GSG German Sports Guns Flip Front & Rear Sight Set Complete New MP7A1 style flip up front & rear sight set. Includes iron sights (folded down) for low profile sighting system and can also be deployed in the flipped up position for longer distance...HKP-18772Now: $152.95Was: $179.95 -
On Sale
HK MP5, MP5K Faux Suppressor - KAC Style - 1/2x28
MFI
Now: $124.95Was: $138.95MFI HK MP5K, SP5K KAC-Navy Faux Suppressor - 1/2x28 The MFI faux KAC-Navy suppressor is designed to thread onto any 1/2x28 barrels and fully enclose the 3-lugs, ensuring an authentic-looking fit and finish. Inspired by the coveted KAC MP5N suppressor,...HKP-22364Now: $124.95Was: $138.95 -
On Sale
HK93 Wide Handguard - Short
AC-Unity
Now: $59.95Was: $78.95AC-Unity HK93 Wide Handguard - Short AC-Unity wide/short handguard, specifically designed for the HK33, HK93,HK34 and G3K. This handguard is also the perfect fit for PTR rifles utilizing the shorter HK93 length handguards. The perfect option to match up...HKP-21638Now: $59.95Was: $78.95 -
On Sale
Glock 9mm +3 Magazine Extension
Tactical Precision MFG
Now: $16.46Was: $39.95TPM Glock 9mm +3 Magazine Extension This extension is made from machined 6061 aluminum. This magazine extension will increase the capacity, reload speed, mag drops, and overall functionality of your pistol. Available in various colors to customize to...HKP-21136-MNow: $16.46Was: $39.95 -
HK UMP 30 Round .40 Magazine - LEO Marked
H&K Heckler & Koch
$64.9530 Round Magazine - LEO Marked - Used - UMP .40 S/W Each 30 round magazine will fit all HK UMP .40 caliber carbines, SMG's as well as the USC-UMP .40 caliber conversions. Used in good condition. The perfect option for those that like to collect LEO...HKP-20651$64.95 -
On Sale
Universal Belt Holster - QB Ambidextrous
Comp-Tac
Now: $45.95Was: $54.95QB Belt Holster - Ambidextrous - Universal - VP9, VP40, P30, USP, P2000, HK45 Finally- one holster to cover your whole HK Collection. Comp-Tac spent years researching the dimensional difference between various HK pistols and designed a precision fitted,...HKP-19853Now: $45.95Was: $54.95