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 USP Compact Variant 4 Right Decock Control Lever
H&K Heckler & Koch
$34.95USPC - Decock Lever V4 - Decock Only Compatible with all USP Compact pistols and provides the V4 Decock ONLY (no safety function) when used with the Variant 3 & 4 Detent Plate. This is the correct lever for those who are "left-handed"...HKP-02264$34.95 -
HK (9mm) 4 Prong Pistol Flash Hider - Threaded 1/2x28
USA
$74.95H&K (9mm) 4 Prong Pistol Flash Hider - Threaded 1/2x28 This flash hider enhances both the look and functionality of your firearm. Constructed from 4140 ordnance-grade steel, it is heat-treated and finished with a Melonite coating for...HKP-01965$74.95 -
HK416, MR556, MR762 Spring Lock Bolt
H&K Heckler & Koch
$9.99H&K HK MR556/MR762/416 Spring Lock Bolt Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-16848$9.99 -
HK416, MR556 Semi-Auto Hammer - Complete
H&K Heckler & Koch
$107.95H&K HK416, MR556 Semi-Auto Hammer - Complete Genuine German complete hammer and spring assembly. Includes: Semi-auto hammer Hammer spring Side bushing Compatible With: MR556A1 MR556 A4 HK416 AR-15 AR-15 style semi-auto firearms chambered in...HKP-02673$107.95 -
HK UMP Paddle Magazine Release - Extended
HKP HK Parts
$34.95UMP Paddle Magazine Release - Extended Billeted alloy UMP magazine release. This is a very common repair & replacement part as they are fairly easy to break on the UMP lower. With this new metal mag release you get more surface area as well as a much...HKP-17919$34.95 -
HK MP5 40/10 Standard 8mm Roller
H&K Heckler & Koch
$20.95HK German MP5 40/10 8mm Roller - Factory New Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order 2 (pair) for a...HKP-00338$20.95 -
On Sale
HK MP5K, AP5-P Recoil Rod Assembly
MKE
Now: $54.95Was: $64.95MKE HK AP5P/MP5K Recoil Rod Assembly The recoil spring assembly is a great item to have on hand for replacement and spares as this is a consumable wearable part. Compatible With: HK SP5K/MP5K/SP89 Century Arms AP5-P/AP5-M Clones and other HK...HKP-22389Now: $54.95Was: $64.95 -
On Sale
HK MP5, 90 Series Holder Plate for Locking Rollers
MKE
Now: $24.95Was: $29.95MKE Roller Retainer Plate for Rollers This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with use and age of the service weapon. Compatible With: HK MP5, 94 HK MP5K, SP89 HKG3, 91,...HKP-22235Now: $24.95Was: $29.95 -
HK CC9 Extractor Roll Pin
H&K Heckler & Koch
$5.95H&K CC9 Extractor Roll Pin Made in Germany, the extractor roll pin for the CC9 secures the extractor to the slide. Compatible With: HK CC9HKP-22132$5.95 -
Out Of Stock
HK G36, SL8 Roll Pin - Gas Piston
H&K Heckler & Koch
$9.95H&K HK G36, HK SL8 Roll Pin for Gas PistonHKP-16386$9.95 -
HK417, MR762 Charging Handle Pin
H&K Heckler & Koch
$6.95H&K HK MR762/417 Charging Handle Pin HK MR762 & HK 417 Clamping Sleeve for plate on charging handle. There are two of these pins used on the charging handle. Compatible With: HK MR762 HK 417HKP-16754$6.95 -
HK417, MR762 Firing Pin Retaining Pin
H&K Heckler & Koch
$19.95Heckler and Koch MR762 Firing Pin Retaining Pin This firing pin retaining pin is made from a durable, black finished, steel and is a factory original Heckler and Koch component. This retaining pin is made for the HK417 and HK MR762 model of rifles. This...HKP-16612$19.95