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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HK UMP, USC Picatinny Rail Set - 4 Piece
HKP HK Parts
$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...HKP-17429$149.95 -
HK USP Full Size Ambidextrous Control Lever Set
H&K Heckler & Koch
$117.95Ambidextrous Left & Right Side Control Lever Set. Genuine Heckler & Koch ambidextrous control lever kit includes left and right side control lever as well as the roll pin - everything that's needed for installation on all USP or USPC...HKP-00916$117.95 -
HK USP, USP Compact Match Hammer
H&K Heckler & Koch
$103.95HK Match Hammer This is the factory-correct match hammer marked with the factory-correct "S" marking on the left-hand side of the hammer. Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact 9mm HK USP Compact .40 S&W...HKP-02602$103.95 -
HK SP5K 9mm Drop In Paddle Mag Release Upgrade Kit
H&K Heckler & Koch
$129.95German HK SP5K Anti-Rattle Roller Tipped Paddle Magazine Release Kit No modifications, no refinishing...complete drop-in kit included New HK German & USA made paddle mag release kit for the HK SP5K. This kit will allow any end-user to quickly...HKP-18082$129.95 -
On Sale
HK Bayonet Adapter - W/O Screw and Hardware - German - USED
H&K Heckler & Koch
Now: $109.95Was: $149.95H&K German Bayonet Adapter - W/O Screw & Hardware - USED USED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. DOES NOT COME WITH HARDWARE HK German Bayonet Adapter W/O Screw...HKP-00021-USEDNow: $109.95Was: $149.95 -
HK91, G3, PTR 91 Spare Parts Kit
HKP HK Parts / Heckler & Koch
$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...HKP-20684$149.95 -
HK MP5 Magazine Release Set
H&K Heckler & Koch
$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...HKP-02402$184.95 -
Re-Timed Hammer for Registered Sear Pack - SEF, Navy
Michaels Machines
$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...HKP-00153$168.95 -
HK45 Recoil Rod and Spring - Complete
H&K Heckler & Koch
$104.95HK 45 Recoil Complete Rod w/ Spring This is the complete recoil guide assembly for the HK45 pistol. Great item to have on hand for repair or replacement. Compatible With: HK45 HK45 Tactical Please Note: This does not fit the USP .45...HKP-01667$104.95 -
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 spring for the heavy LEM conversion. This LEM conversion...HKP-01037$199.95 -
HK P30, P2000 SA/DA Spartan Hammer - V1
Lazy Wolf
$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...HKP-22186-M$148.95 -
HK USC, UMP Cocking Handle Assembly - Complete
HKP HK Parts
$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...HKP-19155$149.95