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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HK91, G3 Buffer Spring - Surplus
H&K Heckler & Koch
$4.95HK G3, 91 Buffer Spring - Surplus This is the factory buffer spring for the rear stock buffer found on the G3, HK91, 93 A2 style stocks. This is a used excellent shape spring. A great replacement to...HKP-20319$4.95 -
On Sale
HK MP5 QD End Cap with Buffer
HKP HK Parts
Now: $47.96Was: $99.95Quick Detach Steel End Cap With Replaceable Rubber Buffer - HK MP5 With this MP5 QD end cap upgrade you will get a heavier buffer to internally protect your firearm and keep your bolt carrier in tip...HKP-20118Now: $47.96Was: $99.95 -
Out Of Stock
HK91, G3 Barrel - 7.62 / .308 - 18" - Threaded 5/8x24 - Match
PTR
$229.95PTR HK G3/91 (7.62x51/.308) Match Barrel - Threaded 5/8x24 This new PTR-91 US-manufactured 18" heavy profile match grade barrel is perfect for new builds and counts as one US-made compliant part. It...HKP-19633$229.95 -
On Sale
HK VP9, VP40 Sight Tool - Range Master - Universal
HKP HK Parts
Now: $159.34Was: $249.95MGW Armory Precision Tooling Range Master a universal sight tool for HK VP9 HK VP40 Models HK sight tool used for installing & removing front & rear sights on your HK pistol. This is the finest...HKP-18679Now: $159.34Was: $249.95 -
HK VP9, VP40 Grip Panel Right Side - Large
H&K Heckler & Koch
$19.95H&K VP9, VP40 Grip Panel Right Side - Large - Black New HK German manufactured. Left side, medium size perfect for spare or for custom stippling projects. Drop-in part for your HK VP Pistol. CompatiblHKP-16812$19.95 -
HK417, MR762 Mag Catch Retainer Ring
H&K Heckler & Koch
$10.95Heckler and Koch Magazine Catch Retainer Ring for HK417 and HK MR762 Compatible With: H 417,HKP-16521$10.95 -
HK MP7 Retractable Buttstock
H&K Heckler & Koch
$199.95H&K HK MP7 Retractable Stock New Rare HK MP7 - 1 Position - Retractable Buttstock Compatible With: All MP7A1 and MP7A2 FirearmsHKP-18552$199.95 -
On Sale
HK45 Compact, HK45C Tactical Compensator - Quick Detach
HKP HK Parts
Now: $134.96Was: $149.95HK45C, HK45C Tactical - Comp Weight™ Quick Detach Compensator Compatible With: HK45C Tactical HK45C Specifications:HKP-18293Now: $134.96Was: $149.95 -
HK45C LEM Conversion Kit - Complete
H&K Heckler & Koch
$199.95New HK German HK 45 Compact LEM Conversion Kit Complete For All HK 45 Compact Pistols Use factory installed trigger return spring for the light LEM (4.5-5.5lb) and the supplied heavy trigger return...HKP-01037$199.95 -
HK Mark 23, SOCOM Firing Pin Block
H&K Heckler & Koch
$35.95Heckler and Koch Firing Pin Block for Mark 23 and SOCOM This is the real deal and it is plated in nickel and made for the HK Mark 23 and SOCOM models. Compatible With:HKP-01579$35.95 -
HK P2000SK Magazine - 9 Round -.357 SIG
H&K Heckler & Koch
$49.00HK P2000 SK .357 SIG 9 Round Magazine New HK German comes just as pictured for the HK P2000 SK. Compatible With: P2000 SK .40 and .357 SigHKP-01021$49.00 -
Out Of Stock
HK416, MR556 Magazine Spring - 30 Round
H&K Heckler & Koch
$12.95HK German HK MR556 & HK 416 Magazine SpringHKP-13483$12.95