Small Parts
Explore our extensive selection of HK small parts at HKParts, perfect for repairs, upgrades, and custom builds. Our inventory includes high-quality, precision-machined replacement parts and maintenance kits designed for a wide range of HK models. Whether you need push pins, springs, or custom components, our HK-specific small parts ensure optimal performance and durability for your firearm.
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Out Of StockOn Sale
HK UMP, USC 9mm / .40 S&W / .45 ACP 4 Piece Picatinny Rail Set
HKP HK Parts
Now: $119.96Was: $149.95HK UMP, USC Rail Set Complete A complete set of rails for your HK UMP/USC featuring an extended top rail for mounting your optic of choice. The rails are scratch resistant, class 3 mil-spec hard coat anodized. Each set includes the top rail, all 3 side...Now: $119.96Was: $149.95 -
On Sale
HK45, USP, USPC LEM Conversion Kit - Complete
H&K Heckler & Koch
Now: $161.95Was: $179.95H&K Heckler & Koch HK45, USP, USPC Kit - LEM - Complete - Universal HK German "universal" LEM conversion kit for USP, USPC & HK45, and HK45C pistols. This kit converts your V1-V10 HK Pistol to the LEM configuration. Each LEM kit includes all...Now: $161.95Was: $179.95 -
On Sale
HK91, G3, PTR 91 Spare Parts Kit
Now: $134.95Was: $149.95HKP HK G3, HK 91, PTR 91 Spare Parts Kit Spare parts kits for the most commonly worn parts needed to keep your HK G3 going. This offering also includes a pouch to safely store all your replacement parts and needed tools to have on hand when required...Now: $134.95Was: $149.95 -
On Sale
HK MP5 Magazine Release Set
H&K Heckler & Koch
Now: $166.45Was: $184.95H&K Magazine Release Set This is the complete magazine release kit that includes both the paddle mag release and standard left-to-right mag release on your HK 9mm rifle or pistol build. Compatible With: MP5, MP5K style 9mm models Set...Now: $166.45Was: $184.95 -
On Sale
MM Registered Sear Pack - Re-Timed Hammer
Michaels Machines
Now: $152.06Was: $168.95MM Registered Sear Pack - Re-Timed Hammer - USA This part is the necessary addition for all registered sear conversions in 9mm, 40/10, 223, and.308 trigger packs. Protect your valuable investment by using the proper re-timed hammer for your sear pack...Now: $152.06Was: $168.95 -
On Sale
HK USC, UMP Cocking Handle Assembly - Complete
HKP HK Parts
Now: $119.96Was: $149.95HKP Cocking Handle Assembly for HK USC, UMP Complete cocking handle assembly for HK USC and HK UMP platforms. US-made and built to factory-spec dimensions and includes all required components for proper function and replacement. Includes: Steel cocking...Now: $119.96Was: $149.95 -
On Sale
Lazy Wolf HK P30 & P2000 SA/DA Spartan Hammer - V1
Lazy Wolf
Now: $134.06Was: $148.95Lazy Wolf HK P30 & P2000 SA/DA Spartan Hammer - V1 Transform the feel and look of your HK P30 or P2000 Single Action/Dual Action pistol with the Lazy Wolf Guns Skeletonized Spartan Hammer. Redesigned geometry yields a superiorly smooth and...Now: $134.06Was: $148.95 -
On Sale
HK VP9SK Locking Block Guide
H&K Heckler & Koch
Now: $164.66Was: $182.95H&K HK VP9SK Locking Block Guide Locking block guide complete, welded for frame on all HK VP9SK, VP40SK models. Compatible With: HK VP9SK HK VP40SK Does NOT fit the full size VP modelsNow: $164.66Was: $182.95 -
HK21E, HK11E, PSG1, MSG90 Firing Pin
H&K Heckler & Koch
$119.95HK German 21E, 11E, PSG1, & MSG90 Firing Pin New HK genuine German firing pin. These firing pins are no longer in production from HK. We have a limited number available and once they are gone, they are gone for good. Compatible With: HK...$119.95 -
On Sale
HK MR762 Hammer Complete
H&K Heckler & Koch
Now: $161.95Was: $179.95H&K HK MR762 Hammer Complete HK MR762 hammer, hammer spring, & bushing as a complete hammer assembly. Compatible With: HK MR762Now: $161.95Was: $179.95