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 Stock
HK SP5K 9mm Drop In Paddle Mag Release Upgrade Kit
H&K Heckler & Koch
$129.95HKP HK Parts and Heckler and Koch Anti-Rattle Roller Tipped Paddle Magazine Release Kit No modifications, no refinishing...complete drop-in kit included New HK German and USA made paddle mag release kit for the HK SP5K. This kit will allow any...HKP-18082$129.95 -
HK USP Left Side V3 Decocking Lever
H&K Heckler & Koch
$47.95H&K HK USP Left Side V3 Decocking Lever V3 decock only lever for right-handed operation. German HK V3 lever for full-size USP's. When used along with the V3 - V4 detent plate, it will convert to decock only - no safety. For use with right-handed...HKP-01168$47.95 -
HK MP5SF Elbow Spring Bushing Sleeve
H&K Heckler & Koch
$5.95Heckler and Koch replacement distance sleeve for MP5SF elbow spring with roller Features: Precision-machined elbow spring and roller used in traditional roller-delayed trigger packs. Original HK design ensures perfect trigger geometry, smooth...HKP-03330$5.95 -
HK SL8, G36 Magazine Release Axle Pin
GSG9
$10.95GSG9 Magazine Release Axle - USA made for HK G36 and HK SL8 Mag release axle for all G36 and SL8 models. A must-have spare part. Made in the USA. Compatible With: G36 G36K SL8 Other custom G36 type buildsHKP-18255$10.95 -
HK416, MR556 Firing Pin
H&K Heckler & Koch
$54.95Heckler and Koch HK MR556/416 Firing Pin New HK German manufactured. This is a great item to have on hand as the firing pin is one of the most abused components in the HK MR556 and HK 416 weapon systems. Compatible With: HK MR556 HK 416 HK...HKP-00045$54.95 -
HK416, MR556 Magazine Catch
H&K Heckler & Koch
$61.95Heckler and Koch Magazine Catch for HK416 and HK MR556 New HK German manufacture magazine catch for the HK 416 and MR556 family of firearms. Compatible With: HK416, MR556HKP-15458$61.95 -
HK416, MR556, HK417, MR762 Forward Assist Plunger Spring
H&K Heckler & Koch
$5.95Heckler and Koch's Forward Assist Plunger Spring for HK416, MR556, HK417, MR762 New HK German manufacture. Compatible With: HK416, MR556 HK417, MR762 HK G28 HK M27HKP-02537$5.95 -
HK MP5, HK90 Series Pinned Hammer Strut
HKP HK Parts
$13.95HKP HK G3,91,PTR, 93,33 & MP5, 94 Pinned Hammer Strut New USA hammer strut for 90 series rifles and pistols. A perfect spare to have on hand. This is a pinned hammer spring shank. Perfect for your HK project or rebuild. Compatible With: HK trigger...HKP-20315$13.95 -
HK416 Ejection Port Axle
H&K Heckler & Koch
$4.95Ejection Port Axle - Steel- HK 416 New HK USA manufacture for the HK 416 family of firearms. This is the axle that holds the ejection port cover in place on the upper receiver.HKP-20039$4.95 -
Out Of Stock
HK416, MR556 Takedown Pin - Front - A1 Style
H&K Heckler & Koch
$64.95H&K HK MR556 Front Lower Receiver Locking Pin With Spring Loaded Detent This part is the front (large) takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and...HKP-02663$64.95 -
HK MP5, SP89, HK91, HK93, HK94 Grip Screw
H&K Heckler & Koch
$8.95H&K Grip Screw New HK grip screw that is now out of production. Great for a spare. Compatible With: HK91 HK93 HK94 SP89HKP-01725$8.95 -
HK VP9, VP9SK, VP40 Trigger Stop Bolt
H&K Heckler & Koch
$14.95H&K HK VP9/VP9SK, VP40 Trigger Stop Bolt Stop Bolt for Trigger VP9, VP40. Compatible With: HK VP9 HK VP9SK HK VP40 HK VP9A1 F HK VP9A1 KHKP-16784$14.95